chore(libs): Update charm libs

[merkata]

This PR updates the charm libs and should solve the issue with Grafana dashboards not appearing as described in canonical/grafana-k8s-operator#245 and fixed in canonical/grafana-k8s-operator#247

[github-actions]

Test coverage for a472eff

Name                            Stmts   Miss Branch BrPart  Cover   Missing
---------------------------------------------------------------------------
src/actions/__init__.py             3      0      0      0   100%
src/actions/register_user.py       20      0      2      0   100%
src/actions/reset_instance.py      21      3      2      1    83%   54-58
src/charm.py                       96      4     10      1    95%   92-93, 154-155
src/charm_state.py                 45      2     10      2    93%   22, 79
src/charm_types.py                  8      0      0      0   100%
src/constants.py                   12      0      0      0   100%
src/database_client.py             53      1     10      3    94%   35, 47->exit, 69->exit
src/database_observer.py           54      4      6      0    93%   70-72, 96
src/exceptions.py                   4      0      0      0   100%
src/observability.py                9      0      0      0   100%
src/pebble.py                      47      0      0      0   100%
src/synapse/__init__.py             3      0      0      0   100%
src/synapse/api.py                 83      2     10      1    97%   138-139
src/synapse/workload.py            94      3     10      1    96%   161, 292-297
src/user.py                        23      0      4      0   100%
---------------------------------------------------------------------------
TOTAL                             575     19     64      9    96%

Static code analysis report

Run started:2023-08-25 04:25:48.555606

Test results:
  No issues identified.

Code scanned:
  Total lines of code: 2590
  Total lines skipped (#nosec): 1
  Total potential issues skipped due to specifically being disabled (e.g., #nosec BXXX): 0

Run metrics:
  Total issues (by severity):
  	Undefined: 0
  	Low: 0
  	Medium: 0
  	High: 0
  Total issues (by confidence):
  	Undefined: 0
  	Low: 0
  	Medium: 0
  	High: 0
Files skipped (0):