chore: pre-commit autoupdate

[pre-commit-ci]

updates:

• github.com/kynan/nbstripout: 0.4.0 → 0.5.0

[codecov]

Codecov Report

Merging #178 (9bbe91c) into master (179baaf) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #178   +/-   ##
=======================================
  Coverage   96.31%   96.31%           
=======================================
  Files          40       40           
  Lines         978      978           
=======================================
  Hits          942      942           
  Misses         36       36           

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