Fix new static analysis issue with minimumStability constants

Author: asgrim

.github/workflows/continuous-integration.yml

@@ -16,6 +16,7 @@ jobs:
           - '8.1'
           - '8.2'
           - '8.3'
+          - '8.4'
     steps:
       - name: Setup PHP
         uses: shivammathur/setup-php@v2