Increase timeout limit for cell execution during spx bld.

Author: rossbar

site/conf.py

@@ -40,6 +40,9 @@
 # This pattern also affects html_static_path and html_extra_path.
 exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store', 'notebooks']
 
+# MyST-NB configuration
+execution_timeout = 60
+
 
 # -- Options for HTML output -------------------------------------------------