Bump holidays from 0.88 to 0.90 (#211)

Bumps [holidays](https://github.com/vacanza/holidays) from 0.88 to 0.90.
- [Release notes](https://github.com/vacanza/holidays/releases)
- [Changelog](https://github.com/vacanza/holidays/blob/dev/CHANGES.md)
- [Commits](vacanza/holidays@v0.88...v0.90)

---
updated-dependencies:
- dependency-name: holidays
  dependency-version: '0.90'
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements.txt

@@ -5,4 +5,4 @@ uvicorn==0.40.0
 slowapi==0.1.9
 email-validator==2.3.0
 exchange_calendars==4.13
-holidays==0.88
+holidays==0.90