Fix CloudFront invalidation workflow triggers

Author: carlospolop

.github/workflows/cloudfront_invalidate_assets.yml

@@ -8,9 +8,6 @@ on:
       - 'theme/**/*.css'
       - 'theme/**/*.js'
       - 'theme/**/*.hbs'
-    paths-ignore:
-      - '.github/**'
-      - 'book/**'
   workflow_dispatch:
 
 permissions: