Remove cron as it makes the workflow get disabled after 60days

Author: Seldaek

.github/workflows/continuous-integration.yml

@@ -1,9 +1,7 @@
 name: Testing
 on:
- pull_request:
+ pull_request: 
  push:
- schedule:
- - cron: "30 6 1 * *"
 
 jobs:
  build:
@@ -16,6 +14,7 @@ jobs:
  - 8.2
  - 8.3
  - 8.4
+ - 8.5
  dependency-levels:
  - 'highest'
  experimental: