Limit workflow triggers to relevant file changes

Switch deploy workflow to release trigger and add path filters
to asset update workflow so it only runs when assets or readme change.

Author: pfefferle

.github/workflows/deploy.yml

@@ -1,9 +1,8 @@
 name: Deploy to WordPress.org
 
 on:
-  push:
-    tags:
-      - '*'
+  release:
+    types: [released]
 
 jobs:
   tag:

.github/workflows/update-assets.yml

@@ -4,6 +4,10 @@ on:
   push:
     branches:
       - trunk
+    paths:
+      - '.wordpress-org/**'
+      - 'readme.md'
+      - '.github/workflows/update-assets.yml'
 
 jobs:
   trunk: