Bump recurring-ical-events from 2.1.3 to 2.2.1 (#2376)

Bumps [recurring-ical-events](https://github.com/niccokunzmann/python-recurring-ical-events) from 2.1.3 to 2.2.1.
- [Commits](niccokunzmann/python-recurring-ical-events@v2.1.3...v2.2.1)

---
updated-dependencies:
- dependency-name: recurring-ical-events
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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requirements.txt

@@ -13,7 +13,7 @@ python-dateutil>=2.8.2
 python-Levenshtein>=0.12.0
 pytz>=2018.9
 PyYAML==6.0.1
-recurring-ical-events==2.1.3
+recurring-ical-events==2.2.1
 requests==2.31.0
 sqlalchemy==1.3.24
 tenacity==8.2.3