In order to have stable testing on Cloud, we should create on kogito-examples repository, a `nightly` branch/tag for master and each release branch, so that we are sure the current content of examples is in sync with deployed runtimes/optaplanner/apps artifacts.

This should be implemented at the end of the `deploy examples` part and so this should be added into the main nightly pipeline.

Also this step should be executed only in case of a nightly (boolean param `UPDATE_NIGHTLY_BRANCH`).