🌱 Bump controller-runtime to v0.15.1

[killianmuldoon]

Bump controller-runtime to v0.15.1

Release notes: https://github.com/kubernetes-sigs/controller-runtime/releases/tag/v0.15.1

/area dependency

[killianmuldoon]

/cherry-pick release-1.5

[killianmuldoon]

/cherry-pick release-1.5

[k8s-infra-cherrypick-robot]

@killianmuldoon: once the present PR merges, I will cherry-pick it on top of release-1.5 in a new PR and assign it to you.

In response to this:

/cherry-pick release-1.5

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[sbueringer]

/lgtm
/approve

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: 9fb6d643a7856f205d75979056373214cd59f919

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: sbueringer

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[k8s-infra-cherrypick-robot]

@killianmuldoon: #9126 failed to apply on top of branch "release-1.5":

Applying: Bump controller-runtime to v0.15.1
Using index info to reconstruct a base tree...
M	go.mod
M	go.sum
M	hack/tools/go.mod
M	hack/tools/go.sum
M	test/go.mod
M	test/go.sum
Falling back to patching base and 3-way merge...
Auto-merging test/go.sum
Auto-merging test/go.mod
Auto-merging hack/tools/go.sum
CONFLICT (content): Merge conflict in hack/tools/go.sum
Auto-merging hack/tools/go.mod
CONFLICT (content): Merge conflict in hack/tools/go.mod
Auto-merging go.sum
Auto-merging go.mod
error: Failed to merge in the changes.
hint: Use 'git am --show-current-patch=diff' to see the failed patch
Patch failed at 0001 Bump controller-runtime to v0.15.1
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".

In response to this:

/cherry-pick release-1.5

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.