Advertencia de .NET para Android XA1029
warning XA1029: The 'AotAssemblies' MSBuild property is deprecated. Edit the project file in a text editor to remove this property, and use the 'RunAOTCompilation' MSBuild property instead.
En lugar de usar:
<PropertyGroup Condition=" '$(Configuration)' == 'Release' ">
<AotAssemblies>true</AotAssemblies>
</PropertyGroup>
Use en su lugar:
<PropertyGroup Condition=" '$(Configuration)' == 'Release' ">
<RunAOTCompilation>true</RunAOTCompilation>
</PropertyGroup>