fix: update GitHub Actions upload-artifact to v5

- Updated from deprecated v3 to latest v5
- Fixes CI/CD build job failure
- All other CI checks now passing

Author: Sakeeb91

.github/workflows/ci.yml

@@ -94,7 +94,7 @@ jobs:
           NEXT_PUBLIC_API_URL: ${{ secrets.API_URL }}
 
       - name: Upload build artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v5
         with:
           name: build-artifacts
           path: |