ci: use new cherry-pick action on release cycle 4.6 [WPB-8770] 🍒

[github-actions]

This PR was automatically cherry-picked based on the following PR:

• ci: use new cherry-pick action on release cycle 4.6 [WPB-8770] #2726

Original PR description:

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PR Submission Checklist for internal contributors

• The PR Title

  • conforms to the style of semantic commits messages¹ supported in Wire's Github Workflow²
  • contains a reference JIRA issue number like SQPIT-764
  • answers the question: If merged, this PR will: ... ³

• The PR Description

  • is free of optional paragraphs and you have filled the relevant parts to the best of your ability

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What's new in this PR?

Issues

• Current cherry-pick action is hard to maintain
• Changes to 4.6 are not automatically cherry-picked to release/candidate

Solutions

Use the new cherry-pick action, also on 4.6 -> release/candidate

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PR Post Merge Checklist for internal contributors

• If any soft of configuration variable was introduced by this PR, it has been added to the relevant documents and the CI jobs have been updated.

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References

1. https://sparkbox.com/foundry/semantic_commit_messages
2. https://github.com/wireapp/.github#usage
3. E.g. feat(conversation-list): Sort conversations by most emojis in the title #SQPIT-764.