bump katex

setup.py

@@ -116,7 +116,7 @@ def package_files(prefix: str, directory: str, extension: str):
     'docutils==0.17.1',
     'sphinx_markdown_tables==0.0.17',
     'sphinx-argparse==0.4.0',
-    'sphinxcontrib.katex==0.9.6',
+    'sphinxcontrib.katex==0.9.9',
     'sphinxext.opengraph==0.9.1',
     'sphinxemoji==0.2.0',
     'furo==2023.9.10',