Duplicaties in migraions

[Maksim-Burtsev]

I have same problem which was in #279

Now i have a migration which i wanna delete it (because in one branch appeared two 23 migration) and create new (with 24 number)

And when i do aerich migrate i have this:

[Maksim-Burtsev]

I was delete correct 23 migration and after that try to make new migration (that why it happens)

When i was delete wrong 23 migrations and migrate -> aerich generate correct 24 migrations