lint: update ruff and fix linting

[lengau]

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---

Requires #67

[codecov]

Codecov Report

Merging #68 (d9a9435) into main (83e16ec) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main      #68   +/-   ##
=======================================
  Coverage   88.09%   88.09%           
=======================================
  Files          13       13           
  Lines         630      630           
  Branches      125      125           
=======================================
  Hits          555      555           
  Misses         61       61           
  Partials       14       14           

Impacted Files	Coverage Δ
craft_archives/utils.py	37.77% <ø> (ø)
craft_archives/repo/apt_sources_manager.py	93.40% <100.00%> (ø)
craft_archives/repo/package_repository.py	98.75% <100.00%> (ø)