[pre-commit.ci] pre-commit autoupdate

[pre-commit-ci]

updates:

• https://github.com/psf/black → https://github.com/psf/black-pre-commit-mirror
• github.com/kynan/nbstripout: 0.8.1 → 0.8.2

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.70%. Comparing base (68ff376) to head (33abb3a).
⚠️ Report is 5 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master       #9   +/-   ##
=======================================
  Coverage   97.70%   97.70%           
=======================================
  Files           8        8           
  Lines        1175     1175           
=======================================
  Hits         1148     1148           
  Misses         27       27           

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