Update tests.yml

Author: imanghafoori1

.github/workflows/tests.yml

@@ -71,7 +71,7 @@ jobs:
           uses: actions/checkout@v2
 
         - name: Run tests
-          run: vendor/bin/phpunit --coverage-clover ./coverage.xml
+          run: ./vendor/bin/phpunit --coverage-clover ./coverage.xml
 
 
         - name: Upload to Codecov