Fix CD on Windows

Author: Lamparter

.github/workflows/cd.yml

@@ -40,4 +40,4 @@ jobs:
 
       # Publish to NuGet
       - name: Publish to NuGet
-        run: dotnet nuget push ./output/*.nupkg --api-key ${{ secrets.NUGET_API_KEY }} --source https://api.nuget.org/v3/index.json
+        run: dotnet nuget push .\output\*.nupkg --api-key ${{ secrets.NUGET_API_KEY }} --source https://api.nuget.org/v3/index.json