feat(vertical-pod-autoscaler): update registry.k8s.io/autoscaling/vpa to v1.2.1

[sebastien-prudhomme]

This PR contains the following updates:

Package	Update	Change
registry.k8s.io/autoscaling/vpa-admission-controller	minor	1.1.2 -> 1.2.1
registry.k8s.io/autoscaling/vpa-recommender	minor	1.1.2 -> 1.2.1
registry.k8s.io/autoscaling/vpa-updater	minor	1.1.2 -> 1.2.1

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[sebastien-prudhomme]

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[raywainman]

We are looking to change the lease name for the vpa-recommender as part of kubernetes/autoscaler#7461.

Would you be open to me adding the new lease name here for now? https://github.com/cowboysysop/charts/blob/master/charts/vertical-pod-autoscaler/templates/recommender/clusterrole.yaml#L141-L142

That would minimize the likelihood of disruption during upgrade to the next release.