Explicity reference Newtonsoft.Json

MediaBrowser.Providers/MediaBrowser.Providers.csproj

@@ -19,6 +19,7 @@
     <PackageReference Include="Microsoft.Extensions.Configuration.Abstractions" Version="5.0.0" />
     <PackageReference Include="Microsoft.Extensions.Caching.Abstractions" Version="5.0.0" />
     <PackageReference Include="Microsoft.Extensions.Http" Version="5.0.0" />
+    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
     <PackageReference Include="OptimizedPriorityQueue" Version="5.0.0" />
     <PackageReference Include="PlaylistsNET" Version="1.1.3" />
     <PackageReference Include="TMDbLib" Version="1.7.3-alpha" />