Update actions/download-artifact action to v4.3.0

Author: renovate[bot]

.github/workflows/dotnet.yml

@@ -39,7 +39,7 @@ jobs:
 
     steps:
       - name: Download artifacts
-        uses: actions/download-artifact@v4.2.1
+        uses: actions/download-artifact@v4.3.0
         with:
           name: ${{ github.event.repository.name }}
           path: out/${{ github.event.repository.name }}