Bump go1.21 and update dependencies

[jkhelil]

Changes

• Bump go to 1.21
• Bump sigs.k8s.io/controller-runtime to 0.14.6
• Bump k8s.io/api to 0.27.4
• Update OWNERS

Submitter Checklist

• Includes tests if functionality changed/was added
• Includes docs if changes are user-facing
• Set a kind label on this PR
• Release notes block has been filled in, or marked NONE

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Release Notes

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[jkhelil]

@shipwright-io/operator-approvers PTAL

[adambkaplan]

See comment about k8s/client-go. In addition. please provide a descriptive title which indicates this fixes a CVE.

[adambkaplan]

Please ensure client-go is aligned with the other k8s versions. This will break things otherwise.

[jkhelil]

Yes there is a replcaement directive for client-go
k8s.io/client-go => k8s.io/client-go v0.26.8
the k8s.io/client-go v1.5.2 is forced by go mod algorithm
I can see the same thing for the tekton operator go mod https://github.com/tektoncd/operator/blob/main/go.mod#L33

Also, it is worth adding that i tested it locally and it is working correctly

[jkhelil]

@shipwright-io/operator-reviewers
/assign @adambkaplan

[jkhelil]

/assign @coreydaley

[openshift-ci]

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