Update GitHub Actions for Laravel 11

.github/workflows/run-tests.yml

@@ -1,19 +1,27 @@
 name: run-tests
 
-on: [push, pull_request]
+on:
+  - push
+  - pull_request
 
 jobs:
   test:
     runs-on: ubuntu-latest
+
     strategy:
       fail-fast: true
       matrix:
         php: [8.3, 8.2, 8.1]
-        laravel: [10.*]
+        laravel: ['10.*', '11.*']
         dependency-version: [prefer-lowest, prefer-stable]
         include:
           - laravel: 10.*
             testbench: 8.*
+          - laravel: 11.*
+            testbench: 9.*
+        exclude:
+          - laravel: 11.*
+            php: 8.1
 
     name: P${{ matrix.php }} - L${{ matrix.laravel }} - ${{ matrix.dependency-version }}