Bump babel from 2.11.0 to 2.12.1

Bumps [babel](https://github.com/python-babel/babel) from 2.11.0 to 2.12.1.
- [Release notes](https://github.com/python-babel/babel/releases)
- [Changelog](https://github.com/python-babel/babel/blob/master/CHANGES.rst)
- [Commits](https://github.com/python-babel/babel/compare/v2.11.0...v2.12.1)

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

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

requirements.txt

@@ -1,5 +1,5 @@
 certifi==2022.12.7
-babel==2.11.0
+babel==2.12.1
 flask-babel==3.0.1
 flask==2.2.3
 jinja2==3.1.2