Update sphinx requirement from >=4.5,<6.3 to >=4.5,<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@v4.5.0...v7.1.2)

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

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

pyproject.toml

@@ -23,7 +23,7 @@ packages = [{include = "autoregistry"}]
 python = ">=3.8"
 
 [tool.poetry.group.docs.dependencies]
-sphinx = ">=4.5,<6.3"
+sphinx = ">=4.5,<7.2"
 sphinx_rtd_theme = ">=1.0,<1.4"
 
 [tool.poetry.group.dev.dependencies]