Update GitHub Actions for Laravel 11

.github/workflows/run-tests.yml

@@ -1,20 +1,26 @@
 name: run-tests
 
-on: [push]
+on:
+  - push
 
 jobs:
   test:
-
     runs-on: ubuntu-latest
+
     strategy:
       fail-fast: true
       matrix:
-        php: [7.4]
-        laravel: [6.*]
+        php: [7.4, '8.2']
+        laravel: ['6.*', '11.*']
         dependency-version: [prefer-lowest, prefer-stable]
         include:
           - laravel: 6.*
             testbench: 4.*
+          - laravel: 11.*
+            testbench: 9.*
+        exclude:
+          - laravel: 11.*
+            php: 7.4
 
     name: P${{ matrix.php }} - L${{ matrix.laravel }} - ${{ matrix.dependency-version }}