Addition of release notes

This commit was made automatically by the vitess-releaser tool.

See https://github.com/vitessio/vitess-releaser

Signed-off-by: Shlomi Noach <2607934+shlomi-noach@users.noreply.github.com>

changelog/18.0/18.0.7/changelog.md

@@ -39,6 +39,8 @@
 ### Release 
 #### General
  * [release-18.0] Bump to `v18.0.7-SNAPSHOT` after the `v18.0.6` release [#16454](https://github.com/vitessio/vitess/pull/16454)
+ * [xxxDRAFTxxx]r_elease of `v18.0.7` [#16740](https://github.com/vitessio/vitess/pull/16740)
+ * [release-18.0] Code Freeze for `v18.0.7` [#16744](https://github.com/vitessio/vitess/pull/16744)
 ### Testing 
 #### Query Serving
  * [release-18.0] Replace ErrorContains checks with Error checks before running upgrade downgrade [#16701](https://github.com/vitessio/vitess/pull/16701)

changelog/18.0/18.0.7/release_notes.md

@@ -1,7 +1,7 @@
 # Release of Vitess v18.0.7
 The entire changelog for this release can be found [here](https://github.com/vitessio/vitess/blob/main/changelog/18.0/18.0.7/changelog.md).
 
-The release includes 21 merged Pull Requests.
+The release includes 23 merged Pull Requests.
 
 Thanks to all our contributors: @GuptaManan100, @app/vitess-bot, @frouioui, @shlomi-noach, @vitess-bot