Update cilium images (minor) - autoclosed

[gardener-ci-robot]

This PR contains the following updates:

Package	Update	Change
quay.io/cilium/certgen	minor	v0.1.12 -> v0.2.1
quay.io/cilium/cilium	minor	v1.15.6 -> v1.16.1
quay.io/cilium/hubble-relay	minor	v1.15.6 -> v1.16.1
quay.io/cilium/operator	minor	v1.15.6 -> v1.16.1

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Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

👻 Immortal: This PR will be recreated if closed unmerged. Get config help if that's undesired.

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• If you want to rebase/retry this PR, check this box

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This PR has been generated by Renovate Bot.

[gardener-robot]

@gardener-ci-robot Thank you for your contribution.

[gardener-prow]

@gardener-ci-robot: The following test 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-extension-networking-cilium-e2e-kind	9d2284c	link	true	/test pull-extension-networking-cilium-e2e-kind

Full PR test history. Your PR dashboard. Command help for this repository.
Please help us cut down on flakes by linking this test failure to an open flake report or filing a new flake report if you can't find an existing one. Also see our testing guideline for how to avoid and hunt flakes.

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