Test against php 8.3

Author: sergiy-petrov

.github/workflows/tests.yaml

@@ -16,7 +16,7 @@ jobs:
 
     strategy:
       matrix:
-        php: ['7.3', '7.4', '8.0', '8.1', '8.2']
+        php: ['7.3', '7.4', '8.0', '8.1', '8.2', '8.3']
 
     services:
       mariadb: