feat(dotnet): update ver

Author: natalie-o-perret

.github/workflows/on-release-tag-main.yml

@@ -17,7 +17,7 @@ jobs:
       - name: Setup .NET Environment
         uses: actions/setup-dotnet@v1
         with:
-          dotnet-version: 5.0.100
+          dotnet-version: 6.0.400
           source-url: https://api.nuget.org/v3/index.json
         env:
           NUGET_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}