Actions: Only run tests once (#1207)

* Actions: Only run tests once

* Avoid skipped actions

* Same for linter

Author: obenland

.github/workflows/phpcs.yml

@@ -1,6 +1,8 @@
 name: PHP_CodeSniffer
 on:
   push:
+    branches:
+      - trunk
   pull_request:
 jobs:
   phpcs:

.github/workflows/phpunit.yml

@@ -1,6 +1,8 @@
 name: Unit Testing
 on:
   push:
+    branches:
+      - trunk
   pull_request:
 jobs:
   phpunit:
@@ -37,7 +39,7 @@ jobs:
           extensions: mysql
 
       - name: Install Composer dependencies for PHP
-        uses: "ramsey/composer-install@v3"
+        uses: ramsey/composer-install@v3
 
       - name: Setup Test Environment
         run: bash bin/install-wp-tests.sh wordpress_test root root 127.0.0.1 ${{ matrix.wp-version }}