* fix: github_deploy_key check key exists on 422
If we get a 422 response code as we add a key, check if it's because the key already exists or for another reason.
fixes: #6718
* chore: add changelog 10011-github_deploy_key-check-key-present
* chore: fix changelog fragment
* chore: fix changelog fragment
* Update changelog fragment.
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Co-authored-by: Felix Fontein <felix@fontein.de>
