[3.13] Docs: Upgrade Sphinx to 8.2 (pythonGH-130171) (python#130289)

Docs: Upgrade Sphinx to 8.2 (pythonGH-130171)
(cherry picked from commit 736ad66)

Co-authored-by: Adam Turner <[email protected]>

Author: miss-islington

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~=8.2.0
 
 blurb