feat(.git): delete -amd64 and -arm64 image tags after pushing manifest

[youtalk]

Description

• fix(.github): not push manifest if eithor amd64 or arm64 image is missing #5525

This PR deletes the -amd64 and -arm64 image tags after the manifest for the multi-architecture image has been pushed.

How was this PR tested?

Notes for reviewers

None.

Effects on system behavior

None.

[github-actions]

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[mitsudome-r]

Are there any reasons for deleting the tag? I thought we can keep it even if after the manifest is pushed.

[youtalk]

@mitsudome-r It’s simply a matter of consistency. I found it personally unsettling to see a lot of multi-architecture images alongside single-architecture images with suffixes.