move phpcs-ga script from composer to linting workflow

.github/workflows/linting.yml

@@ -58,7 +58,7 @@ jobs:
           branch: ${{ github.head_ref }}
 
       - name: Check coding standards
-        run: composer phpcs-ga | cs2pr
+        run: composer phpcs -- -q -n --report=checkstyle | cs2pr
 
   php-lint:
 

composer.json

@@ -34,7 +34,6 @@
 	"scripts": {
 		"php-lint": "parallel-lint --exclude vendor --exclude node_modules --exclude dist --exclude .git --exclude .phpstan-cache .",
 		"phpcs": "phpcs -p",
-		"phpcs-ga": "phpcs -n --report=checkstyle",
 		"phpcs-fix": "phpcbf",
 		"phpmd": "phpmd . ansi phpmd.xml",
 		"phpmd-baseline": "@phpmd --generate-baseline",