We currently specify different pom properties for our identity and zeebe dependencies. However, in practice these should always be the same and we have even had it before where these have erroneously got out of sync. To avoid this going forward, we should merge these properties to a single property, such as c8.platform.version.

ATs:

• We have a single property in our pom file for both identity and zeebe
• Our compatibility jobs still pass for all test versions
• Our release guide is updated:
  • https://confluence.camunda.com/display/CO/Update+Zeebe+and+Identity+Version+on+the+release+branch
  • https://confluence.camunda.com/display/CO/Update+Zeebe+and+Identity+versions+on+master+and+maintenance+branches
• Our release process is updated