[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 → 5.0.2

[codecov[bot]]

Codecov Report

Merging #464 (c810be5) into master (0a8c608) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #464   +/-   ##
=======================================
  Coverage   36.11%   36.11%           
=======================================
  Files           2        2           
  Lines          36       36           
  Branches        1        1           
=======================================
  Hits           13       13           
  Misses         23       23           

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