Update push checks to the new directory structure

Author: Clorith

.github/workflows/trunk-push-test.yml

@@ -27,7 +27,7 @@ jobs:
           npm --version
 
       - name: PHP Syntax check
-        working-directory: ./src/php
+        working-directory: ./
         run: find . \( -name '*.php' \) -exec php -lf {} \;
 
       - name: Set up composer