Bump whitenoise from 4.1.4 to 6.7.0

Bumps [whitenoise](https://github.com/evansd/whitenoise) from 4.1.4 to 6.7.0.
- [Changelog](https://github.com/evansd/whitenoise/blob/main/docs/changelog.rst)
- [Commits](evansd/whitenoise@v4.1.4...6.7.0)

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

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

requirements.txt

@@ -46,6 +46,6 @@ cairocffi
 git+https://github.com/graphite-project/whisper.git#egg=whisper
 # Ceres is optional
 # git+https://github.com/graphite-project/ceres.git#egg=ceres
-whitenoise==4.1.4
+whitenoise==6.7.0
 urllib3
 six