Bump pre-commit from 2.19.0 to 2.20.0 (#322)

Bumps [pre-commit](https://github.com/pre-commit/pre-commit) from 2.19.0 to 2.20.0.
- [Release notes](https://github.com/pre-commit/pre-commit/releases)
- [Changelog](https://github.com/pre-commit/pre-commit/blob/main/CHANGELOG.md)
- [Commits](pre-commit/pre-commit@v2.19.0...v2.20.0)

---
updated-dependencies:
- dependency-name: pre-commit
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

requirements.txt

@@ -2,7 +2,7 @@
 build==0.8.0
 docutils==0.19
 mypy==0.961; implementation_name=="cpython"
-pre-commit==2.19.0
+pre-commit==2.20.0
 pytest==7.1.2
 pytest-asyncio==0.18.3
 pytest-cov==3.0.0