chore(ci): use .NET8 in "pushfeature" action (#641)

chore: use .NET8 in "pushfeature" action

Co-authored-by: Konstantin <[email protected]>

.github/workflows/feature_branches.yml

@@ -22,7 +22,7 @@ jobs:
       - name: Setup .NET Core
         uses: actions/setup-dotnet@v4
         with:
-          dotnet-version: 6.0.201
+          dotnet-version: 8
       - name: Build/Check for compile errors (dotnet build)
         run: dotnet build --configuration Release --version-suffix "${{github.sha}}"
       - name: Run Unit Tests (dotnet test)