Update Backend.yml

Author: phanxuanquang

Diff for: .github/workflows/Backend.yml

@@ -43,7 +43,7 @@ jobs:
       run: dotnet publish ${{ env.WORKING_DIRECTORY }} --configuration ${{ env.CONFIGURATION }} --no-build --output ${{ env.AZURE_WEBAPP_PACKAGE_PATH }}
 
     - name: Upload artifacts
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: webapp
         path: ${{ env.AZURE_WEBAPP_PACKAGE_PATH }}