🌱Bump cert-manager to v1.15.2

[troy0820]

What this PR does / why we need it:
Updates cert-manager to v1.15.2

Which issue(s) this PR fixes: #10989

/area clusterctl

[k8s-ci-robot]

@troy0820: 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-main	c0360e9	link	false	/test pull-cluster-api-apidiff-main

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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[chrischdi]

Thanks for helping here! 🎉

I think next time you can directly go ahead with the PR and not need to create an issue for it too 👍

/approve
/lgtm

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: 2f9dbe165798313da80e36c2ec8801f5ef63eed0

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: chrischdi

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[sbueringer]

Thank you!! Agree, just a PR is also enough

[sbueringer]

/cherry-pick release-1.8

[sbueringer]

/cherry-pick release-1.7

[sbueringer]

/cherry-pick release-1.6

[k8s-infra-cherrypick-robot]

@sbueringer: new pull request created: #10992

In response to this:

/cherry-pick release-1.8

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[k8s-infra-cherrypick-robot]

@sbueringer: new pull request created: #10993

In response to this:

/cherry-pick release-1.7

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[k8s-infra-cherrypick-robot]

@sbueringer: new pull request created: #10994

In response to this:

/cherry-pick release-1.6

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[troy0820]

Thanks for helping here! 🎉

I think next time you can directly go ahead with the PR and not need to create an issue for it too 👍

/approve /lgtm

No problem, I was under the assumption that each PR needed an issue for some strange reason. I will take not for the next time.