Update release-nuget.yml

Author: PureWeen

.github/workflows/release-nuget.yml

@@ -19,7 +19,9 @@ jobs:
       - name: Setup .NET
         uses: actions/setup-dotnet@v2
         with:
-          dotnet-version: 7.0.x
+          dotnet-version:  | 
+            7.0.x
+            8.0.x
       - name: Install .NET MAUI
         run: dotnet workload install maui
       - name: Get version information from tag