chore: Release stackablectl 1.2.1 #407

Job	Run time
General Pull Request Checks / Run Cargo Deny (bans licenses sources)	50s
General Pull Request Checks / Run Cargo Deny (advisories)	50s
General Pull Request Checks / Run RustDoc	4m 55s
General Pull Request Checks / Run Cargo Tests	3m 57s
General Pull Request Checks / Run Cargo Udeps	9m 21s
General Pull Request Checks / All tests passed	2s
Helm Chart Check	23s
Publish arm64 Image	15m 27s
Publish amd64 Image	14m 58s
Build and publish manifest list	47s
	51m 30s

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