Update postgres Docker tag to v18

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
postgres	service	major	17.6 -> 18.0

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[github-actions]

Hello 👋

here is the most recent benchmark result:

SubscriptionEngineBench
=======================

+---------------------------+-----------------+-----------------+-----------+-----------------+------------+-------------+
|                           | time (kde mode)                               | memory                                     |
+---------------------------+-----------------+-----------------+-----------+-----------------+------------+-------------+
| subject                   | Tag: <current>  | Tag: base       | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+---------------------------+-----------------+-----------------+-----------+-----------------+------------+-------------+
| benchHandle10000Events () | 3.300s (±0.00%) | 3.292s (±0.00%) | +0.24%    | 47.078mb        | 47.613mb   | -1.12%      |
+---------------------------+-----------------+-----------------+-----------+-----------------+------------+-------------+

SimpleSetupBench
================

+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
|                                        | time (kde mode)                                     | memory                                     |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| subject                                | Tag: <current>     | Tag: base          | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| benchLoad1Event ()                     | 1.125ms (±0.00%)   | 1.125ms (±0.00%)   | -0.01%    | 34.385mb        | 34.385mb   | 0.00%       |
| benchLoad10000Events ()                | 49.563ms (±0.00%)  | 49.466ms (±0.00%)  | +0.20%    | 34.385mb        | 34.385mb   | 0.00%       |
| benchSave1Event ()                     | 1.204ms (±0.00%)   | 1.336ms (±0.00%)   | -9.86%    | 34.385mb        | 34.385mb   | 0.00%       |
| benchSave10000Events ()                | 217.276ms (±0.00%) | 217.009ms (±0.00%) | +0.12%    | 34.385mb        | 34.385mb   | 0.00%       |
| benchSave10000Aggregates ()            | 7.828s (±0.00%)    | 7.920s (±0.00%)    | -1.16%    | 34.385mb        | 34.385mb   | 0.00%       |
| benchSave10000AggregatesTransaction () | 5.061s (±0.00%)    | 5.049s (±0.00%)    | +0.25%    | 34.385mb        | 34.385mb   | 0.00%       |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+

SnapshotsBench
==============

+----------------------------------------+-------------------+-------------------+-----------+-----------------+------------+-------------+
|                                        | time (kde mode)                                   | memory                                     |
+----------------------------------------+-------------------+-------------------+-----------+-----------------+------------+-------------+
| subject                                | Tag: <current>    | Tag: base         | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+----------------------------------------+-------------------+-------------------+-----------+-----------------+------------+-------------+
| benchLoad10000EventsMissingSnapshot () | 49.887ms (±0.00%) | 48.988ms (±0.00%) | +1.83%    | 34.390mb        | 34.390mb   | 0.00%       |
| benchLoad10000Events ()                | 1.127ms (±0.00%)  | 1.124ms (±0.00%)  | +0.31%    | 34.389mb        | 34.389mb   | 0.00%       |
+----------------------------------------+-------------------+-------------------+-----------+-----------------+------------+-------------+

SplitStreamBench
================

+-------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
|                         | time (kde mode)                                     | memory                                     |
+-------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| subject                 | Tag: <current>     | Tag: base          | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+-------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| benchLoad10000Events () | 5.069ms (±0.00%)   | 4.887ms (±0.00%)   | +3.74%    | 34.892mb        | 34.892mb   | 0.00%       |
| benchSave10000Events () | 327.519ms (±0.00%) | 328.768ms (±0.00%) | -0.38%    | 34.960mb        | 34.960mb   | 0.00%       |
+-------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+

SimpleSetupStreamStoreBench
===========================

+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
|                                        | time (kde mode)                                     | memory                                     |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| subject                                | Tag: <current>     | Tag: base          | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| benchLoad1Event ()                     | 1.073ms (±0.00%)   | 1.068ms (±0.00%)   | +0.39%    | 34.568mb        | 34.568mb   | 0.00%       |
| benchLoad10000Events ()                | 55.764ms (±0.00%)  | 55.486ms (±0.00%)  | +0.50%    | 34.568mb        | 34.568mb   | 0.00%       |
| benchSave1Event ()                     | 1.189ms (±0.00%)   | 1.180ms (±0.00%)   | +0.83%    | 34.568mb        | 34.568mb   | 0.00%       |
| benchSave10000Events ()                | 287.629ms (±0.00%) | 280.994ms (±0.00%) | +2.36%    | 34.568mb        | 34.568mb   | 0.00%       |
| benchSave10000Aggregates ()            | 8.173s (±0.00%)    | 8.091s (±0.00%)    | +1.01%    | 34.568mb        | 34.568mb   | 0.00%       |
| benchSave10000AggregatesTransaction () | 5.258s (±0.00%)    | 5.245s (±0.00%)    | +0.24%    | 34.568mb        | 34.568mb   | 0.00%       |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+

PersonalDataBench
=================

+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
|                                        | time (kde mode)                                     | memory                                     |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| subject                                | Tag: <current>     | Tag: base          | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| benchLoad1Event ()                     | 1.096ms (±0.00%)   | 1.104ms (±0.00%)   | -0.65%    | 35.580mb        | 35.580mb   | 0.00%       |
| benchLoad10000Events ()                | 93.809ms (±0.00%)  | 97.933ms (±0.00%)  | -4.21%    | 35.580mb        | 35.580mb   | 0.00%       |
| benchSave1Event ()                     | 1.852ms (±0.00%)   | 1.721ms (±0.00%)   | +7.59%    | 35.580mb        | 35.580mb   | 0.00%       |
| benchSave10000Events ()                | 247.733ms (±0.00%) | 256.049ms (±0.00%) | -3.25%    | 35.582mb        | 35.582mb   | 0.00%       |
| benchSave10000Aggregates ()            | 12.141s (±0.00%)   | 12.367s (±0.00%)   | -1.83%    | 35.580mb        | 35.580mb   | 0.00%       |
| benchSave10000AggregatesTransaction () | 9.347s (±0.00%)    | 9.383s (±0.00%)    | -0.38%    | 36.039mb        | 36.039mb   | 0.00%       |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+

SubscriptionEngineBatchBench
============================

+---------------------------+-------------------+-------------------+-----------+-----------------+------------+-------------+
|                           | time (kde mode)                                   | memory                                     |
+---------------------------+-------------------+-------------------+-----------+-----------------+------------+-------------+
| subject                   | Tag: <current>    | Tag: base         | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+---------------------------+-------------------+-------------------+-----------+-----------------+------------+-------------+
| benchHandle10000Events () | 74.746ms (±0.00%) | 74.840ms (±0.00%) | -0.13%    | 34.850mb        | 34.850mb   | 0.00%       |
+---------------------------+-------------------+-------------------+-----------+-----------------+------------+-------------+

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