[CAM-12668] Add an archetype upgrade step to our release guide - camunda JIRA

Add a step to our minor release guide for upgrading the archetypes.

Steps:

Update Camunda version in code
Resolve any problems documented in Camunda BPM update guide and simple other problems (e.g. bumping dependencies)
In case of more complex problems, update can be postponed (e.g. if the involved community extensions are not compatible with the new Camunda release - process test coverage)

Add a step to our minor release guide for upgrading the archetypes.

Steps:

Update Camunda version in code
Resolve any problems documented in Camunda BPM update guide and simple other problems (e.g. bumping dependencies)
In case of more complex problems, update can be postponed (e.g. if the involved community extensions are not compatible with the new Camunda release - process test coverage)