Update optimize C7 release workflow

[misiekhardcore]

Acceptance Criteria (Required on creation)

After successfully updating the release workflow in the monorepo, we now can follow the same changes for Optimize C7

• separate release:prepare and release:perform maven commands
• push changes not with one of the commands, but do the push separately in between them (to resolve permissions issues we encountered in the past)
• create tag and release also in examples repository

Hints

Links

Breakdown

Pull Requests

Beta Give feedback

1. https://github.com/camunda/camunda-optimize/pull/14187
2. https://github.com/camunda/camunda-optimize/pull/14315

Dev2QA handover

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[RomanJRW]

@misiekhardcore - I think we should keep the AP7 team issue template for issues in their repo rather than copying the Optimize one over

[misiekhardcore]

@RomanJRW I am closing this issue