Disabled PHPStan on < 8.0 for now

Author: marc-mabe

.github/workflows/test.yml

@@ -27,7 +27,7 @@ jobs:
             RUN_PSALM: 'false'
           - PHP_VERSION: '7.4'
             CODE_COVERAGE: 'true'
-            RUN_PHPSTAN: 'true'
+            RUN_PHPSTAN: 'false'
             RUN_PSALM: 'true'
           - PHP_VERSION: '8.0'
             CODE_COVERAGE: 'true'