Update dotnet sdk

Author: mivano

.github/workflows/cicd.yaml

@@ -38,7 +38,7 @@ jobs:
       - name: Install .NET SDK
         uses: actions/[email protected]
         with:
-          dotnet-version: '3.1.x'
+          dotnet-version: '7.0.x'
 
       - name: Retrieve cached NuGet packages
         uses: actions/cache@v3