ci: use main as reference for test job

Author: Julien-R44

.github/workflows/checks.yml

@@ -4,7 +4,7 @@ on:
   - pull_request
 jobs:
   test:
-    uses: adonisjs/core/.github/workflows/test.yml
+    uses: adonisjs/core/.github/workflows/test.yml@main
     with:
       install-pnpm: true