build(deps): Bump whitenoise from 6.8.2 to 6.9.0 (#297)

Bumps [whitenoise](https://github.com/evansd/whitenoise) from 6.8.2 to 6.9.0.
- [Changelog](https://github.com/evansd/whitenoise/blob/main/docs/changelog.rst)
- [Commits](evansd/whitenoise@6.8.2...6.9.0)

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

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

requirements.txt

@@ -5,4 +5,4 @@ gunicorn==23.0.0
 psycopg2==2.9.10
 six==1.17.0
 virtualenv==20.29.1
-whitenoise==6.8.2
+whitenoise==6.9.0