Update Microsoft.Data.Sqlite.Core TFMs

[AndriySvyryd]

For EF 10 it should target net10.0;netstandard2.0

[Varorbc]

Are there any plans to drop netstandard2.0?

[AndriySvyryd]

@Varorbc Not currently

[Varorbc]

@AndriySvyryd
Since other libraries like pgsql and SqlClient have already dropped support for netstandard2.0, should we also consider removing it starting with EF10?