Bump whitenoise from 6.1.0 to 6.4.0

Bumps [whitenoise](https://github.com/evansd/whitenoise) from 6.1.0 to 6.4.0.
- [Release notes](https://github.com/evansd/whitenoise/releases)
- [Changelog](https://github.com/evansd/whitenoise/blob/main/docs/changelog.rst)
- [Commits](evansd/whitenoise@6.1.0...6.4.0)

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

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