build(deps): bump flask-caching from 2.2.0 to 2.3.0

Bumps [flask-caching](https://github.com/pallets-eco/flask-caching) from 2.2.0 to 2.3.0.
- [Release notes](https://github.com/pallets-eco/flask-caching/releases)
- [Changelog](https://github.com/pallets-eco/flask-caching/blob/master/CHANGES.rst)
- [Commits](pallets-eco/flask-caching@v2.2.0...v.2.3.0)

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

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

requirements.txt

@@ -35,7 +35,7 @@ ecdsa==0.19.0
 feedgen==1.0.0
 feedparser==6.0.11
 Flask==3.0.3
-Flask-Caching==2.2.0
+Flask-Caching==2.3.0
 flask-gae-static==1.0
 flask-sock==0.7.0
 gdata==4.0.1