Update PHP versions in tests workflow

Author: asbiin

.github/workflows/tests.yml

@@ -23,9 +23,9 @@ jobs:
     name: Run tests
     uses: monicahq/workflows/.github/workflows/laravel.yml@v2
     with:
-      php-versions: "['8.3', '8.4']"
+      php-versions: "['8.4']"
       connections: "['sqlite', 'mysql', 'pgsql']"
-      default-php-version: '8.3'
+      default-php-version: '8.4'
       default-connection: sqlite
       project: monica
     secrets: