Update php.yml

Author: ytake

.github/workflows/php.yml

@@ -2,9 +2,10 @@ name: Tests
 
 on:
   push:
+    branches: [ main ]
   pull_request:
-  schedule:
-    - cron: '0 0 * * *'
+    branches: [ main ]
+
 jobs:
   build:
     runs-on: ubuntu-latest