Update Ivy.Database.Generator.Toolkit to use Pomelo.EntityFramework.MySql v10 when released

[zachwolfe]

Description

Because Ivy.Database.Generator.Toolkit references multiple EFCore providers, we are currently forcing Pomelo.EntityFramework.MySql to use EFCore version 10, even though it was built targeting version 9.

[zachwolfe]

PR link for easier tracking: PomeloFoundation/Pomelo.EntityFrameworkCore.MySql#2019