Bump readthedocs-sphinx-ext from 2.2.0 to 2.2.5

Bumps [readthedocs-sphinx-ext](https://github.com/readthedocs/readthedocs-sphinx-ext) from 2.2.0 to 2.2.5.
- [Commits](readthedocs/readthedocs-sphinx-ext@2.2.0...2.2.5)

---
updated-dependencies:
- dependency-name: readthedocs-sphinx-ext
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

doc/requirements.txt

@@ -3,7 +3,7 @@ nbsphinx
 docutils
 sphinx>=6
 MarkupSafe==2.1.5
-readthedocs-sphinx-ext==2.2.0
+readthedocs-sphinx-ext==2.2.5
 nbformat==5.10.4
 nbsphinx==0.9.1
 typing_extensions==4.5.0