Bump django-bootstrap4 from 23.2 to 23.4

Bumps [django-bootstrap4](https://github.com/zostera/django-bootstrap4) from 23.2 to 23.4.
- [Release notes](https://github.com/zostera/django-bootstrap4/releases)
- [Changelog](https://github.com/zostera/django-bootstrap4/blob/main/CHANGELOG.md)
- [Commits](zostera/django-bootstrap4@v23.2...v23.4)

---
updated-dependencies:
- dependency-name: django-bootstrap4
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements.txt

@@ -1,5 +1,5 @@
 Django==5.0
-django-bootstrap4==23.2
+django-bootstrap4==23.4
 django-compressor==4.4
 django-htmlmin==0.11.0
 django-libsass==0.9