switch nuget.exe to dotnet nuget

.github/workflows/release.yml

@@ -20,14 +20,8 @@ jobs:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           path: ./packages
   
-      - name: Set up NuGet
-        uses: nuget/setup-nuget@v2
-        with:
-          nuget-version: 'latest'
-          nuget-api-key: ${{ secrets.NUGET_API_KEY }}
-  
-      - name: Publish .nupkg files
+      - name: Publish .nupkg and .snupkg files
         run: |
           for f in packages/*.nupkg; do
-            nuget push "$f"
+            dotnet nuget push "$f" -k ${{ secrets.NUGET_API_KEY }} -s https://api.nuget.org/v3/index.json --skip-duplicate
           done