Added exception for Symfony 7 tests with PHP 8.1

Author: andrey-helldar

.github/workflows/phpunit.yml

@@ -11,6 +11,9 @@ jobs:
             matrix:
                 php: [ "8.1", "8.2", "8.3" ]
                 symfony: [ "5.3", "6.0", "7.0" ]
+                exclude:
+                    -   php: "8.1"
+                        symfony: "7.0"
 
         name: PHP ${{ matrix.php }}, Symfony ${{ matrix.symfony }} ${{ matrix.prefer }}