Update charm libraries

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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 coverage for 78bd8b4

Name                 Stmts   Miss Branch BrPart  Cover   Missing
----------------------------------------------------------------
src/charm.py           185     11     39      8    92%   145-146, 166-167, 186, 226-228, 242->254, 326->329, 351, 364, 373->376, 451
src/file_reader.py      17      0      6      0   100%
----------------------------------------------------------------
TOTAL                  202     11     45      8    92%

Static code analysis report

Run started:2024-06-07 07:56:16.337037

Test results:
  No issues identified.

Code scanned:
  Total lines of code: 1251
  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):