Bump Python requirement mkdocs-material to 9.5.2

docs-requirements.txt

 black==23.12.0
 doc8==1.1.1
 mkdocs==1.5.3
-mkdocs-material==9.4.8
+mkdocs-material==9.5.2
 mkdocstrings==0.23.0
 mkdocstrings-python==1.7.5
 recommonmark==0.7.1