ci: trigger Docs checks for catalog changes

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Author: MariusStorhaug

.github/workflows/Docs.yml

@@ -16,6 +16,7 @@ on:
       - main
     paths:
       - docs/**
+      - .github/actions/update-index/**
       - .github/workflows/Docs.yml
 
 concurrency: