Do not run 8.4 tests on 8.4 for certain Symfony versions

Author: cleptric

.github/workflows/tests.yaml

@@ -53,6 +53,12 @@ jobs:
             symfony-version: 7.*
           - php: '8.1'
             symfony-version: 7.*
+          - php: '8.4'
+            symfony-version: 4.4.*
+          - php: '8.4'
+            symfony-version: 5.*
+          - php: '8.4'
+            symfony-version: 6.*
         include:
           - php: '7.2'
             symfony-version: 4.4.*