ci: [pre-commit.ci] pre-commit autoupdate

[pre-commit-ci[bot]]

updates:

• github.com/asottile/pyupgrade: v2.37.2 → v2.37.3
• github.com/PyCQA/flake8: 4.0.1 → 5.0.4

[codecov[bot]]

Codecov Report

Merging #46 (c9b9953) into master (c31e30f) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #46   +/-   ##
=======================================
  Coverage   81.60%   81.60%           
=======================================
  Files         128      128           
  Lines        3974     3974           
  Branches      799      799           
=======================================
  Hits         3243     3243           
  Misses        602      602           
  Partials      129      129           

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