chore(main): release 0.21.2

[github-actions[bot]]

:robot: I have created a release beep boop

0.21.2 (2024-07-19)

Bug Fixes

• allow skipping node groups that are master or delete complete (#415) (bd32dec)

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[github-actions[bot]]

:robot: Release is at https://github.com/vexxhost/magnum-cluster-api/releases/tag/v0.21.2 :sunflower: