Update dotnet version for github actions

Author: glopesdev

.github/workflows/build.yml

@@ -27,7 +27,7 @@ jobs:
       - name: Setup .NET Core SDK
         uses: actions/setup-dotnet@v4
         with:
-          dotnet-version: 7.x
+          dotnet-version: 8.x
 
       - name: Custom Build Steps
         run: .\build.ps1