build(deps): bump babel from 2.13.0 to 2.13.1 in /docs (#2911)

Bumps [babel](https://github.com/python-babel/babel) from 2.13.0 to 2.13.1.
- [Release notes](https://github.com/python-babel/babel/releases)
- [Changelog](https://github.com/python-babel/babel/blob/master/CHANGES.rst)
- [Commits](python-babel/babel@v2.13.0...v2.13.1)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

docs/requirements.txt

@@ -1,5 +1,5 @@
 alabaster==0.7.13
-Babel==2.13.0
+Babel==2.13.1
 certifi==2023.7.22
 chardet==5.2.0
 commonmark==0.9.1