Update registry.k8s.io/kops/dns-controller Docker tag to v1.30.1

This MR contains the following updates:

Package	Type	Update	Change
registry.k8s.io/kops/dns-controller		patch	1.30.0 -> 1.30.1
registry.k8s.io/kops/dns-controller	ironbank-docker	patch	1.30.0 -> 1.30.1
registry.k8s.io/kops/dns-controller	stage	patch	1.30.0 -> 1.30.1

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