chore: run GH actions on push to main branch

.github/workflows/ci.yml

@@ -1,5 +1,10 @@
 name: Automatisch CI
-on: [pull_request]
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
 jobs:
   linter:
     runs-on: ubuntu-latest

.github/workflows/playwright.yml

@@ -1,8 +1,9 @@
 name: Automatisch UI Tests
 on:
   push:
-  schedule:
-    - cron: '0 12 * * *'
+    branches:
+      - main
+  pull_request:
   workflow_dispatch:
 
 env: