Update public.ecr.aws/karpenter/controller Docker tag to v1.7.0

This MR contains the following updates:

Package	Type	Update	Change
public.ecr.aws/karpenter/controller		minor	1.6.3 -> 1.7.0
public.ecr.aws/karpenter/controller	ironbank-docker	minor	1.6.3 -> 1.7.0
public.ecr.aws/karpenter/controller	stage	minor	1.6.3 -> 1.7.0

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