GH-99380: Update to Sphinx 7 (#99381)

AA-Turner · web-flow · commit e6495159f6f2 · 2024-01-20T11:20:51.000Z
diff --git a/Doc/requirements.txt b/Doc/requirements.txt
@@ -6,8 +6,7 @@
 # Sphinx version is pinned so that new versions that introduce new warnings
 # won't suddenly cause build failures. Updating the version is fine as long
 # as no warnings are raised by doing so.
-# PR #104777: Sphinx 6.2 no longer uses imghdr, removed in Python 3.13.
-sphinx==6.2.1
+sphinx~=7.2.0
 
 blurb
 
