Can anyone explain how to migrate database into Odoo 17 to Odoo 18, i already migrate the module, now i need to migrate the database through the test upgrade button, how do i do that?

Before start clicking the test upgrade button, is i need to add latest version of the code into that git branch, that is if an going to migrate into Odoo 18 from Odoo 17, before start clicking on the test upgrade button on the branch is  i need to add V18 Modules?