Update containerd to v1.6.16

[hakman]

No description provided.

[hakman]

/retest

[k8s-ci-robot]

@hakman: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-kops-e2e-cni-cilium-ipv6	22d2c15	link	true	/test pull-kops-e2e-cni-cilium-ipv6
pull-kops-e2e-cni-calico-ipv6	22d2c15	link	true	/test pull-kops-e2e-cni-calico-ipv6

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: zetaab

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[zetaab]

ideas why the tests are failing?

[hakman]

@zetaab #15071 (comment)

[hakman]

@zetaab Let's make the IPv6 jobs optional for now.
kubernetes/test-infra#28580