ci: update test condition (#112)

Signed-off-by: peefy <[email protected]>

Author: Peefy

.github/workflows/main_darwin.yml

@@ -1,5 +1,11 @@
 name: build-and-test-darwin
-on: [push, pull_request]
+on:
+  pull_request:
+    branches:
+     - main
+  push:
+    branches:
+     - main
 jobs:
   build-and-test:
     runs-on: macos-12

.github/workflows/main_linux.yml

@@ -1,7 +1,13 @@
 # Reference from:
 # https://github.com/c-bata/go-prompt/blob/master/.github/workflows/test.yml
 name: build-and-test-linux with coverage
-on: [push, pull_request]
+on:
+  pull_request:
+    branches:
+     - main
+  push:
+    branches:
+     - main
 jobs:
   build-and-test:
     runs-on: ubuntu-latest

.github/workflows/main_windows.yml

@@ -1,5 +1,11 @@
 name: build-and-test-windows
-on: [push, pull_request]
+on:
+  pull_request:
+    branches:
+     - main
+  push:
+    branches:
+     - main
 jobs:
   build-and-test:
     runs-on: windows-latest