Local epics-docs inventory

Author: Tom-Willemsen

doc/conf.py

@@ -104,6 +104,8 @@
 
 intersphinx_mapping = {
     "ibex_user_manual": ("https://isiscomputinggroup.github.io/ibex_user_manual/", None),
-    "EPICS": ("https://docs.epics-controls.org/en/latest/", None),
+    # docs.epics-controls.org sometimes gives us a 429 "too many requests" from GHA.
+    # If it does, then fall back to local inventory. This local inventory should be
+    # updated periodically.
+    "EPICS": ("https://docs.epics-controls.org/en/latest/", "epics-controls.inv"),
 }
-