Docs: Upgrade Sphinx to 8.2

Author: AA-Turner

Doc/requirements.txt

@@ -7,7 +7,7 @@
 # won't suddenly cause build failures. Updating the version is fine as long
 # as no warnings are raised by doing so.
 # Keep this version in sync with ``Doc/conf.py``.
-sphinx~=8.1.0
+sphinx==8.2.0rc1
 
 blurb