Update PHP versions in GitHub Actions workflow

Drop PHP 8.1 and add 8.4

Author: PhiloNL

.github/workflows/test.yml

@@ -17,7 +17,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php: [8.1, 8.2, 8.3]
+        php: [8.2, 8.3, 8.4]
         laravel: [10.*, 11.*]
         exclude:
           - php: 8.1
@@ -56,4 +56,4 @@ jobs:
       - name: Run Unit tests
         run: vendor/bin/phpunit --testsuite Unit
         env:
-          RUNNING_IN_CI: true
+          RUNNING_IN_CI: true