[pre-commit.ci] pre-commit autoupdate

[pre-commit-ci[bot]]

updates:

• github.com/PyCQA/flake8: 4.0.1 → 5.0.4

[codecov[bot]]

Codecov Report

Merging #523 (00c3034) into master (4ee500a) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #523   +/-   ##
=======================================
  Coverage   98.23%   98.23%           
=======================================
  Files          60       60           
  Lines        2658     2658           
  Branches      278      278           
=======================================
  Hits         2611     2611           
  Misses         28       28           
  Partials       19       19           

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