Bump icalendar from 5.0.10 to 5.0.11

Bumps [icalendar](https://github.com/collective/icalendar) from 5.0.10 to 5.0.11.
- [Changelog](https://github.com/collective/icalendar/blob/master/CHANGES.rst)
- [Commits](collective/icalendar@v5.0.10...v5.0.11)

---
updated-dependencies:
- dependency-name: icalendar
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

requirements.txt

@@ -25,7 +25,7 @@ django-environ==0.11.2
 drf-spectacular[sidecar]==0.26.5
 easy-thumbnails==2.8.5
 fontawesomefree~=6.4.2
-icalendar==5.0.10
+icalendar==5.0.11
 invoke==2.2.0
 openfoodfacts==0.1.11
 pillow==10.1.0