⬆️ Bump sphinx from 7.3.6 to 7.3.7

Bumps [sphinx](https://github.com/sphinx-doc/sphinx) from 7.3.6 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@v7.3.6...v7.3.7)

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

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

doc/requirements.txt

@@ -1,7 +1,7 @@
 click==8.1.7
 entrypoints==0.4
 Pillow==10.3.0
-Sphinx==7.3.6
+Sphinx==7.3.7
 furo==2024.1.29
 ipython==8.23.0
 netCDF4==1.6.5