Update generate-and-publish-mkdocs.yml

Changed github action to only release new docs when new stable release is published. See https://docs.github.com/en/actions/writing-workflows/choosing-when-your-workflow-runs/events-that-trigger-workflows#release for full list of possible release events to subscribe to

.github/workflows/generate-and-publish-mkdocs.yml

@@ -1,9 +1,9 @@
 name: Publish Docs
 
 on:
-  push:
-    branches:
-      - main
+  release:
+    types: [released]
+  workflow_dispatch:
 
 jobs:
   create-mkdocs-docs: