Update BuildCacheRefresh.yml

Author: Javier-RSP

.github/workflows/BuildCacheRefresh.yml

@@ -27,7 +27,7 @@ jobs:
     - name: Setup .NET
       uses: actions/setup-dotnet@v1
       with:
-        dotnet-version: 6.0.x
+        dotnet-version: 8.0.x
     - name: Restore dependencies
       run: dotnet restore
     - name: Build