Bump whitenoise from 6.5.0 to 6.6.0 in /htmxdj

Bumps [whitenoise](https://github.com/evansd/whitenoise) from 6.5.0 to 6.6.0.
- [Changelog](https://github.com/evansd/whitenoise/blob/main/docs/changelog.rst)
- [Commits](evansd/whitenoise@6.5.0...6.6.0)

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

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

htmxdj/requirements/base.txt

@@ -2,7 +2,7 @@ python-slugify==8.0.1  # https://github.com/un33k/python-slugify
 Pillow==10.1.0  # https://github.com/python-pillow/Pillow
 # rcssmin==1.1.1 --install-option="--without-c-extensions"  # https://github.com/ndparker/rcssmin
 # argon2-cffi==23.1.0  # https://github.com/hynek/argon2_cffi
-whitenoise==6.5.0  # https://github.com/evansd/whitenoise
+whitenoise==6.6.0  # https://github.com/evansd/whitenoise
 redis==5.0.1  # https://github.com/redis/redis-py
 
 # Django