Trigger workflows on PR

Author: acogoluegnes

.github/workflows/test-3.11-alpha.yml

@@ -3,6 +3,9 @@ name: Test against RabbitMQ 3.11 alpha
 on:
   schedule:
     - cron: '0 4 * * *'
+  pull_request:
+    branches:
+      - main
   push:
     branches:
       - main

.github/workflows/test-3.11-stable.yml

@@ -1,6 +1,9 @@
 name: Test against RabbitMQ 3.11 stable
 
 on:
+  pull_request:
+    branches:
+      - main
   push:
     branches:
       - main