chore(deps): update ubuntu:22.04 docker digest to 1b8d8ff

[renovate]

This PR contains the following updates:

Package	Update	Change
ubuntu	digest	193c13d -> 1b8d8ff

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[github-actions]

Test coverage for e82bc67

Name              Stmts   Miss Branch BrPart  Cover   Missing
-------------------------------------------------------------
src/charm.py        335     31     80     12    90%   186, 194-195, 207, 335->343, 376->381, 580-582, 587-588, 599-601, 606-607, 619-621, 626-627, 639-641, 666-668, 710->exit, 720->exit, 750-756, 782->exit, 796-797, 807->exit, 821
src/database.py      30      1      8      1    95%   56
-------------------------------------------------------------
TOTAL               365     32     88     13    90%

Static code analysis report

Run started:2024-04-16 20:49:35.335043

Test results:
  No issues identified.

Code scanned:
  Total lines of code: 1984
  Total lines skipped (#nosec): 3
  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):