Bump beartype from 0.20.2 to 0.21.0 (#1175)

Bumps [beartype](https://github.com/beartype/beartype) from 0.20.2 to 0.21.0.
- [Release notes](https://github.com/beartype/beartype/releases)
- [Changelog](https://github.com/beartype/beartype/blob/main/doc/RELEASE.rst)
- [Commits](beartype/beartype@v0.20.2...v0.21.0)

---
updated-dependencies:
- dependency-name: beartype
  dependency-version: 0.21.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]