Update CI to test PHP 8.0-8.5

Author: koriym

.github/workflows/continuous-integration.yml

@@ -9,5 +9,5 @@ jobs:
   ci:
     uses: ray-di/.github/.github/workflows/continuous-integration.yml@v1
     with:
-      old_stable: '["7.2", "7.3", "7.4", "8.0", "8.1", "8.2", "8.3"]'
-      current_stable: 8.4
+      old_stable: '["8.0", "8.1", "8.2", "8.3", "8.4"]'
+      current_stable: 8.5