New: Upgrade to netstandard xml library

src/NzbDrone.Core/Lidarr.Core.csproj

@@ -13,7 +13,7 @@
     <PackageReference Include="RestSharp" Version="106.6.10" />
     <PackageReference Include="System.IO.Abstractions" Version="4.0.11" />
     <PackageReference Include="TagLibSharp-Lidarr" Version="2.2.0.19" />
-    <PackageReference Include="xmlrpcnet" Version="3.0.0.266" />
+    <PackageReference Include="Kveer.XmlRPC" Version="1.1.1" />
     <PackageReference Include="SpotifyAPI.Web" Version="4.2.0" />
     <PackageReference Include="SixLabors.ImageSharp.Drawing" Version="1.0.0-beta0006" />
     <PackageReference Include="Equ" Version="2.2.0" />