Bump whitenoise from 6.2.0 to 6.4.0

Bumps [whitenoise](https://github.com/evansd/whitenoise) from 6.2.0 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@6.2.0...6.4.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

{{cookiecutter.project_slug}}/requirements.txt

@@ -9,4 +9,4 @@ drf-yasg==1.21.5
 gunicorn==20.1.0
 psycopg2-binary==2.9.5
 python-decouple==3.8
-whitenoise==6.2.0
+whitenoise==6.4.0