Use SDK 5.0.408 (#186)

Author: Matthiee

.github/workflows/dotnet-core.yml

@@ -16,7 +16,7 @@ jobs:
     - name: Setup .NET Core
       uses: actions/setup-dotnet@v1
       with:
-        dotnet-version: 5.0.101
+        dotnet-version: 5.0.408
     - name: Clean
       run: dotnet clean -c Release
     - name: Install dependencies