In my scenario I am able to update plugin , when I follow these steps-
First I run updated script of table in db.
Then update build version on project then it works fine for me,
but when I uninstall that plugin from project and again I install that plugin then it shows migration error while I am using same script at the time of installation.
If I delete migration table then install/uninstall problem also resolved.
but I do not want to delete migration table and want to reinstall plugin.