fix to use composer/install v2

Author: samsonasik

.github/workflows/tests.yaml

@@ -25,6 +25,6 @@ jobs:
                     coverage: none
                     ini-values: zend.assertions=1
 
-            -   uses: "ramsey/composer-install@v1"
+            -   uses: "ramsey/composer-install@v2"
 
             -   run: vendor/bin/phpunit