Bump holidays from 0.54 to 0.56 (#27)

* Bump holidays from 0.54 to 0.55

Bumps [holidays](https://github.com/vacanza/python-holidays) from 0.54 to 0.55.
- [Release notes](https://github.com/vacanza/python-holidays/releases)
- [Changelog](https://github.com/vacanza/python-holidays/blob/dev/CHANGES)
- [Commits](vacanza/holidays@v0.54...v0.55)

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

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

* Merge branch 'main' into dependabot/pip/holidays-0.55

* Update requirements.txt

---------

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: w3stling <[email protected]>
Co-authored-by: Peter Westling <[email protected]>

requirements.txt

@@ -5,4 +5,4 @@ uvicorn==0.30.6
 slowapi==0.1.9
 email-validator==2.2.0
 exchange_calendars==4.5.6
-holidays==0.54
+holidays==0.56