Bump Python requirement mkdocs-material to 9.6.3

pyproject.toml

@@ -45,7 +45,7 @@ Authors = "https://teklia.com"
 [project.optional-dependencies]
 docs = [
     "black==24.10.0",
-    "mkdocs-material==9.6.2",
+    "mkdocs-material==9.6.3",
     "mkdocstrings-python==1.12.2",
 ]
 tests = [