Bump sphinx from 5.2.3 to 7.0.1

Bumps [sphinx](https://github.com/sphinx-doc/sphinx) from 5.2.3 to 7.0.1.
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/master/CHANGES)
- [Commits](sphinx-doc/sphinx@v5.2.3...v7.0.1)

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

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

doc/requirements.txt

@@ -1,6 +1,6 @@
 click==8.1.3
 entrypoints==0.4
-Sphinx==5.2.3
+Sphinx==7.0.1
 sphinx-rtd-theme==1.0.0
 ipython==8.10.0
 netCDF4==1.6.3