feat: deploy previous on non-main branches

.github/workflows/deploy.yml

@@ -11,7 +11,6 @@ jobs:
   deploy:
     # Only run if the build was successful
     if: ${{ github.event.workflow_run.conclusion == 'success' }}
-
     name: 🚀 Deploy
     runs-on: ubuntu-latest
     environment:
@@ -29,7 +28,7 @@ jobs:
         uses: actions/deploy-pages@v4
         with:
           artifact_name: "build-artifact-${{ github.sha }}"
-          preview: false
+          preview: ${{ github.ref != 'refs/heads/main' }}
 
       - name:  Get the URL for the deployment
         run: echo "${{ steps.deployment.outputs.page_url }}"