update CI matrix

Author: stancl

.github/workflows/ci.yml

@@ -9,12 +9,12 @@ jobs:
       fail-fast: true
       matrix:
         include:
-        - laravel: 9
-          php: 8.0
         - laravel: 10
           php: 8.1
         - laravel: 11
           php: 8.3
+        - laravel: 12
+          php: 8.4
 
     name: Tests (PHPUnit) - L${{ matrix.laravel }}