title: How to upgrade Camunda from 7.12 to 7.15 in Spring boot?
body: <p>I've been scratching my head over the update docs to figure out how to upgrade the Camunda version. It's just so amazingly complex for some reason due to seemingly large number of compatibility issues with every upgrade of Camunda.
  Can someone please guide on how can I migrate Camunda from 7.12 to 7.15?</p>
  <p>PS: I'm not using the REST api.</p>