[pre-commit.ci] pre-commit autoupdate

[pre-commit-ci]

updates:

• git://github.com/pre-commit/pre-commit-hooks: v3.4.0 → v4.0.1
• https://github.com/timothycrosley/isort → https://github.com/PyCQA/isort
• github.com/PyCQA/isort: 5.8.0 → 5.9.3
• github.com/psf/black: 20.8b1 → 21.7b0
• https://gitlab.com/pycqa/flake8 → https://github.com/PyCQA/flake8
• github.com/PyCQA/flake8: 3.9.1 → 3.9.2
• github.com/pre-commit/mirrors-mypy: v0.812 → v0.910

[welcome]

Thanks for submitting your first pull request! You are awesome! 🤗

If you haven't done so already, check out EBP's Code of Conduct and our Contributing Guide, as this will greatly help the review process.

Welcome to the EBP community! 🎉

[codecov]

Codecov Report

Merging #410 (48b7e7b) into master (f362378) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #410   +/-   ##
=======================================
  Coverage   90.78%   90.78%           
=======================================
  Files          16       16           
  Lines        1877     1877           
=======================================
  Hits         1704     1704           
  Misses        173      173           

Flag	Coverage Δ
pytests	90.78% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
myst_parser/parse_html.py	90.35% <ø> (ø)
myst_parser/docutils_renderer.py	92.75% <100.00%> (ø)

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[choldgraf]

I'm not gonna merge pre-commit on the repositories where there are failing tests. I'm not sure how to interpret the mypy pre-commit errors about "missing stubs" - they seem related to docutils primarily