fix(deps): bump sphinx from 7.2.5 to 7.3.7

Bumps [sphinx](https://github.com/sphinx-doc/sphinx) from 7.2.5 to 7.3.7.
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/master/CHANGES.rst)
- [Commits](sphinx-doc/sphinx@v7.2.5...v7.3.7)

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

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

Author: dependabot[bot]

requirements-docs.txt

@@ -1,5 +1,5 @@
 matplotlib==3.8.0
 numpydoc==1.7.0
-sphinx==7.2.5
+sphinx==7.3.7
 sphinx-gallery==0.16.0
 sphinx-rtd-theme==2.0.0