Run CI workflows at night

Author: acogoluegnes

.github/workflows/test-rabbitmq-alphas.yml

@@ -2,7 +2,7 @@ name: Test against RabbitMQ alphas
 
 on:
   schedule:
-    - cron:  '0 * * * *'
+    - cron:  '0 4 * * *'
   push:
     branches:
       - main

.github/workflows/test-supported-java-versions.yml

@@ -2,7 +2,7 @@ name: Test against supported Java versions
 
 on:
   schedule:
-    - cron:  '0 * * * *'
+    - cron:  '0 3 * * *'
   workflow_dispatch:
 
 jobs:

.github/workflows/test.yml

@@ -5,8 +5,6 @@ on:
     branches:
       - main
   workflow_dispatch:
-  schedule:
-    - cron:  '0 * * * *'
 
 env:
   CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}