Bump cilium version to 1.12.4

[olemarkus]

No description provided.

[olemarkus]

/test pull-kops-e2e-cni-cilium-eni
/test pull-kops-e2e-cni-cilium-etcd

[olemarkus]

/retest

[olemarkus]

/retest

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: johngmyers

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[k8s-ci-robot]

@olemarkus: 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-kops-e2e-aws-upgrade-123-ko123-to-klatest-kolatest-many-addons	5737b86	link	false	/test pull-kops-e2e-aws-upgrade-123-ko123-to-klatest-kolatest-many-addons

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[k8s-triage-robot]

The Kubernetes project has merge-blocking tests that are currently too flaky to consistently pass.

This bot retests PRs for certain kubernetes repos according to the following rules:

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/retest