Update sphinx requirement from <7.1,>=5.3.0 to >=5.3.0,<7.2

Updates the requirements on [sphinx](https://github.com/sphinx-doc/sphinx) to permit the latest version.
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/master/CHANGES)
- [Commits](sphinx-doc/sphinx@v5.3.0...v7.1.0)

---
updated-dependencies:
- dependency-name: sphinx
  dependency-type: direct:production
...

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

Author: dependabot[bot]

pyproject.toml

@@ -45,7 +45,7 @@ dependencies = [
 
 [project.optional-dependencies]
 docs = [
-    "sphinx>=5.3.0,<7.1",
+    "sphinx>=5.3.0,<7.2",
     "sphinx-book-theme>=1.0.0,<1.1",
     "sphinxcontrib-bibtex>=2.5.0,<2.6",
     "myst-parser>=0.18.0,<2.1",