Update Laravel version in test workflow configuration

Author: freekmurze

.github/workflows/run-tests.yml

@@ -17,7 +17,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, windows-latest]
         php: [8.4, 8.3, 8.2]
-        laravel: ['10.*', '11.*' '12.*']
+        laravel: ['10.*', '11.*', '12.*']
         stability: [prefer-stable]
         include:
           - laravel: 10.*