Bump icalendar from 5.0.12 to 5.0.13 (#2428)

Bumps [icalendar](https://github.com/collective/icalendar) from 5.0.12 to 5.0.13.
- [Release notes](https://github.com/collective/icalendar/releases)
- [Changelog](https://github.com/collective/icalendar/blob/main/CHANGES.rst)
- [Commits](https://github.com/collective/icalendar/compare/v5.0.12...v5.0.13)

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

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

requirements.txt

@@ -3,7 +3,7 @@ argparse==1.4.0
 filelock==3.15.4
 gspread==6.1.2
 humanize>=0.5.1
-icalendar==5.0.12
+icalendar==5.0.13
 Jinja2==3.1.4
 libmozdata==0.2.4
 numpy==2.0.0