Bump sentry-sdk from 1.20.0 to 1.21.0

Bumps [sentry-sdk](https://github.com/getsentry/sentry-python) from 1.20.0 to 1.21.0.
- [Release notes](https://github.com/getsentry/sentry-python/releases)
- [Changelog](https://github.com/getsentry/sentry-python/blob/master/CHANGELOG.md)
- [Commits](getsentry/sentry-python@1.20.0...1.21.0)

---
updated-dependencies:
- dependency-name: sentry-sdk
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]