[pre-commit.ci] pre-commit autoupdate

[pre-commit-ci[bot]]

updates:

• https://gitlab.com/pycqa/flake8 → https://github.com/PyCQA/flake8
• github.com/PyCQA/flake8: 3.9.2 → 4.0.1
• https://github.com/pre-commit/mirrors-isort → https://github.com/PyCQA/isort
• github.com/PyCQA/isort: v5.10.1 → 5.10.1
• github.com/asottile/pyupgrade: v2.32.0 → v2.32.1

[codecov[bot]]

Codecov Report

Merging #281 (d2b7fb3) into master (768decf) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #281   +/-   ##
=======================================
  Coverage   86.31%   86.31%           
=======================================
  Files          12       12           
  Lines        2776     2776           
=======================================
  Hits         2396     2396           
  Misses        380      380           

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