Update charm libraries

[github-actions]

Automated action to fetch latest version of charm libraries. The branch of this PR
will be wiped during the next check. Unless you really know what you're doing, you
most likely don't want to push any commits to this branch.

[github-actions]

Test results for commit 9eb5f90

Test coverage for 9eb5f90

Name            Stmts   Miss Branch BrPart  Cover   Missing
-----------------------------------------------------------
src/charm.py      210     13     34      8    91%   172-174, 197, 205, 209, 227, 231, 255, 257, 286, 363, 388
src/maubot.py      31      4      2      1    85%   53, 84-86
-----------------------------------------------------------
TOTAL             241     17     36      9    91%

Static code analysis report

Run started:2025-03-06 20:30:46.072376

Test results:
  No issues identified.

Code scanned:
  Total lines of code: 1247
  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):