Bump sphinx from 5.3.0 to 7.2.6

Bumps [sphinx](https://github.com/sphinx-doc/sphinx) from 5.3.0 to 7.2.6.
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/master/CHANGES.rst)
- [Commits](sphinx-doc/sphinx@v5.3.0...v7.2.6)

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

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

requirements.txt

@@ -12,7 +12,7 @@ crabnet==2.0.2
 conda-souschef==2.2.3
 scikit-learn==1.2.0
 myst-parser==0.18.1
-sphinx==5.3.0
+sphinx==7.2.6
 sphinx_rtd_theme==1.1.1
 sphinx_copybutton==0.5.1
 composition-based-feature-vector==1.0.4