Suppress config.cache warnings due to "cannot cache unpickable config…

…uration value: 'html_context' (because it contains a function, class, or module object)"

conf.py

@@ -29,6 +29,10 @@
 # This pattern also affects html_static_path and html_extra_path.
 exclude_patterns = ["_build", "Thumbs.db", ".DS_Store"]
 
+# Suppress config.cache warnings
+# https://github.com/sphinx-doc/sphinx/issues/12300#issuecomment-2062238457
+suppress_warnings = ["config.cache"]
+
 
 # -- Options for HTML output -------------------------------------------------
 html_title = "FEMlium"