Evade a Sphinx/PyO3 bug (temporarily) in docs builds.

See sphinx-doc/sphinx#11662 which seems like it will be
resolved with an upstream PyO3 release.

May have to come back and change this pin to be an upper
pin if need be / the upstream issue doesn't merge soon.

Author: Julian

docs/requirements.in

@@ -1,7 +1,7 @@
 file:.#egg=jsonschema
 furo
 lxml
-sphinx
+sphinx!=7.2.5
 sphinx-autoapi
 sphinx-autodoc-typehints
 sphinx-copybutton

docs/requirements.txt

@@ -94,7 +94,7 @@ snowballstemmer==2.2.0
     # via sphinx
 soupsieve==2.5
     # via beautifulsoup4
-sphinx==7.2.5
+sphinx==7.2.4
     # via
     #   -r docs/requirements.in
     #   furo