feat: adjust symfony test

Author: Chris53897

.github/workflows/tests-upcoming-symfony.yaml

@@ -24,8 +24,8 @@ jobs:
           ini-values: date.timezone=UTC
 
       - name: 'Install project dependencies'
-        #env:
-          #SYMFONY_REQUIRE: '6.0.x@dev'
+        env:
+          SYMFONY_REQUIRE: '6.0.x@dev'
         run: |
           composer global require --no-progress --no-scripts --no-plugins symfony/flex
           composer config minimum-stability dev