Add more linting

[blink1073]

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[codecov-commenter]

Codecov Report

Base: 81.90% // Head: 81.18% // Decreases project coverage by -0.72% ⚠️

Coverage data is based on head (c40c92d) compared to base (07908d3).
Patch coverage: 32.14% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #369      +/-   ##
==========================================
- Coverage   81.90%   81.18%   -0.72%     
==========================================
  Files          22       22              
  Lines        1752     1765      +13     
  Branches      333      333              
==========================================
- Hits         1435     1433       -2     
- Misses        216      229      +13     
- Partials      101      103       +2     

Impacted Files	Coverage Δ
jupyterlab_server/config.py	73.52% <0.00%> (-0.44%)	⬇️
jupyterlab_server/process.py	65.43% <0.00%> (-2.09%)	⬇️
jupyterlab_server/test_utils.py	69.40% <0.00%> (-3.12%)	⬇️
jupyterlab_server/workspaces_app.py	85.71% <0.00%> (-2.53%)	⬇️
jupyterlab_server/licenses_handler.py	97.63% <33.33%> (-0.78%)	⬇️
jupyterlab_server/workspaces_handler.py	88.18% <50.00%> (-0.62%)	⬇️
jupyterlab_server/translation_utils.py	89.91% <78.94%> (-0.05%)	⬇️

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