Merge branch 'feat/cronjob-backoff' into 'master'

feat: add cronjob backoffLimit

Closes #235

See merge request https://gitlab.com/gitlab-org/cluster-integration/auto-deploy-image/-/merge_requests/322



Merged-by: Hordur Freyr Yngvason <hfyngvason@gitlab.com>
Approved-by: Hordur Freyr Yngvason <hfyngvason@gitlab.com>
Co-authored-by: Ruaridh Williamson <ruaridh.williamson@flexciton.com>