Test against PHP 8.3 (#63)

Author: gehrisandro

.github/workflows/tests.yml

@@ -9,7 +9,7 @@ jobs:
       fail-fast: true
       matrix:
         os: [ubuntu-latest]
-        php: [8.1, 8.2]
+        php: [8.1, 8.2, 8.3]
         laravel: [10.*, 9.*]
         dependency-version: [prefer-lowest, prefer-stable]