Update catalog readme only when the commit is on the main branch

Author: ArneMaes0

.github/workflows/update-catalog-details.yml

@@ -4,10 +4,8 @@ name: Update Catalog Details
 on:
   # Triggers the workflow on push or pull request events but only for the master branch
   push:
-    branches: []
-    tags:
-      - "[0-9]+.[0-9]+.[0-9]+.[0-9]+"
-      - "[0-9]+.[0-9]+.[0-9]+.[0-9]+-**"
+    branches:
+      - main
 
   # Allows you to run this workflow manually from the Actions tab
   workflow_dispatch: