Update github.com/sigstore/cosign to v3 #6489
Description
In order to be able to update github.com/sigstore/sigstore from 1.9.6 to 1.10.0 we need to update github.com/sigstore/cosign first.
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In order to be able to update github.com/sigstore/sigstore from 1.9.6 to 1.10.0 we need to update github.com/sigstore/cosign first.