Update CI to latest SDKs

Author: augustoproiete

.github/workflows/ci.yml

@@ -34,7 +34,7 @@ jobs:
       - name: Setup net5.0
         uses: actions/setup-dotnet@v1.8.1
         with:
-          dotnet-version: "5.0.400"
+          dotnet-version: "5.0.401"
       - name: Run dotnet --info
         run: dotnet --info
       - uses: actions/checkout@v2.3.4