chore(deps): bump babel from 2.14.0 to 2.15.0 in /hack/api-docs (#3451)

Bumps [babel](https://github.com/python-babel/babel) from 2.14.0 to 2.15.0.
- [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/v2.14.0...v2.15.0)

---
updated-dependencies:
- dependency-name: babel
  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>

hack/api-docs/requirements.txt

@@ -1,4 +1,4 @@
-Babel==2.14.0
+Babel==2.15.0
 certifi==2024.2.2
 charset-normalizer==3.3.2
 click==8.1.7