Streamline event triggers in main.yml to use array syntax for push and pull_request

Author: kingbuzzman

.github/workflows/main.yml

@@ -1,12 +1,6 @@
 name: main
 
-on:
-  push:
-    branches:
-      - main
-  pull_request:
-    branches:
-      - main
+on: [push, pull_request]
 
 concurrency:
   group: ci-main-${{ github.ref }}