[release-1.5] 🌱 Bump cert-manager to v1.12.4

[k8s-infra-cherrypick-robot]

This is an automated cherry-pick of #9358

/assign killianmuldoon

[killianmuldoon]

/lgtm
/approve

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: 80a462f932897e0a8635a41595f115ed62b22ed6

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: killianmuldoon

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[k8s-ci-robot]

@k8s-infra-cherrypick-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-cluster-api-apidiff-release-1-5	9456448	link	false	/test pull-cluster-api-apidiff-release-1-5

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