AAE-16060 Fix Helm Release and Publish for RC workflows on some repositories

[igdianov]

Checklist

• Jira Reference (also in PR title): https://alfresco.atlassian.net/browse/AAE-16060
• README updated after adding/changing behaviour of an action
• Proposed version increment for release:
  • Patch (bugfix)
  • Minor (new feature)
  • Major (breaking changes)
• External PR link where changes has been tested:

Description

Add git pull --rebase to the helm-release-and-publish action before trying to push to reduce the window that causes conflict with remote, i.e.

Run git push origin
To https://github.com/Alfresco/charts
 ! [rejected]        master -> master (fetch first)
error: failed to push some refs to 'https://github.com/Alfresco/charts'
hint: Updates were rejected because the remote contains work that you do
hint: not have locally. This is usually caused by another repository pushing
hint: to the same ref. You may want to first integrate the remote changes
hint: (e.g., 'git pull ...') before pushing again.
hint: See the 'Note about fast-forwards' in 'git push --help' for details.
Error: Process completed with exit code 1.

Also use git push --dry-run to verify the clean state

[atchertchian]

Not sure why this was needed: looks like a temporary command (?)