Update GitHub Actions workflow to modify Laravel installation arguments

Author: Itamar Junior

.github/workflows/test.yml

@@ -9,5 +9,5 @@ jobs:
     steps:
     - uses: matriphe/laravel-pkg-test-action@v2
       with:
-        laravel_install_args: --prefer-dist codeitamarjr/laravel-appointments:dev-master
+        laravel_install_args: --prefer-dist
         package_install_args: --prefer-dist --no-progress