pin sphinxcontrib-applehelp==1.0.2 which is breaking spellcheck

Author: abhinavsingh

docs/_ext/spelling_stub_ext.py

@@ -1,6 +1,6 @@
 """Sphinx extension for making the spelling directive noop."""
 
-from typing import List
+from typing import List, Dict, Any
 
 from sphinx.util.nodes import nodes
 from sphinx.application import Sphinx
@@ -17,7 +17,7 @@ def run(self) -> List[nodes.Node]:
         return []
 
 
-def setup(app: Sphinx) -> None:
+def setup(app: Sphinx) -> Dict[str, Any]:
     """Initialize the extension."""
     app.add_directive('spelling', SpellingNoOpDirective)
 

docs/requirements.in

@@ -6,3 +6,7 @@ sphinxcontrib-apidoc >= 0.3.0
 sphinxcontrib-towncrier >= 0.2.0a0
 # See https://github.com/yaml/pyyaml/issues/724#issuecomment-1638587228
 pyyaml==5.3.1
+# PIN to fix:
+# The sphinxcontrib.applehelp extension used by this project needs at least Sphinx v5.0;
+# it therefore cannot be built with this version.
+sphinxcontrib-applehelp==1.0.2