Bump Laravel to 11.31 in CI

Author: fulopattila122

.github/workflows/tests.yml

@@ -9,7 +9,7 @@ jobs:
     strategy:
       matrix:
         php: ['8.1', '8.2', '8.3', '8.4']
-        laravel: ['10.10.1', '10.48', '11.0', '11.30']
+        laravel: ['10.10.1', '10.48', '11.0', '11.31']
         exclude:
           - php: '8.1'
             laravel: '11.0'