Release Candidate 2.0.0 RC2

[evegufy]

Summary

Build the new release candidate of "portal" (see components below) and deploy to consortia integration env. Execute the release process in the eclipse-tractusx organisation. Branch: Release Branch

Tasks:

• [x] merge migration https://github.com/eclipse-tractusx/portal-backend/issues/649
• [x] changelog backend
• [x] changelog frontend --> na
• [x] changelog registration
• [x] changelog assets --> na
• [x] changelog iam 3.0.0-rc.2
• [x] release backend (version bump, push tag, create GH release, merge relesae branch)
• [x] release frontend (version bump, push tag, create GH release, merge relesae branch) --> na
• [x] release registration (version bump, push tag, create GH release, merge relesae branch)
• [x] release assets (version bump, push tag, create GH release, merge relesae branch) --> na
• [x] release portal helm chart (version bump, changelog, update readme, release new helm chart, merge relesae branch)
• [x] release iam 3.0.0-rc.2
• [x] provide successive release branch (tractusx und ng-forks) for release closure
• [x] change base of open PRs
• [x] Sync main and dev branches in ng-forks
• [x] user info
• [x] deploy to integration environment
• [x] run test automation
• [ ] validate results
• [x] inform team members of the deployment status

[evegufy]

Test automation run outstanding. @Phil91 could you please run it and validate the results within the limits of https://github.com/eclipse-tractusx/portal/issues/230#issuecomment-2037442925? Thanks