Update to latest knative.dev/pkg

[mattmoor]

Changes

This is largely go get knative.dev/pkg@main and some changes to fix upstream breakages.

Submitter Checklist

As the author of this PR, please check off the items in this checklist:

• Docs included if any changes are user facing
• Tests included if any functionality added or changed
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  functionality, content, code)
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Release Notes

Minimum Kubernetes version is now 1.19.

[mattmoor]

/kind cleanup

[mattmoor]

Need to run codegen, but I want one more change in PKG to avoid InternalError events when we use NewRequeue* methods. 😅

[mattmoor]

For the test.KubeClient changes, that was dropped here: knative/pkg#2151

[mattmoor]

For the namespace RBAC changes, the OwnerRef logic was added here: knative/pkg#2098

[mattmoor]

Ok, this seems to be passing tests, but some of the checks need a kick.

[mattmoor]

/test check-pr-has-kind-label

[vdemeester]

/test .*

[mattmoor]

@vdemeester any idea how to kick the CLA bot?

For context, this is mostly to land: #4131.

[vdemeester]

A good old close/reopen should do the trick (although it restarts all jobs 😹 )

[mattmoor]

/test pull-tekton-pipeline-alpha-integration-tests

[mattmoor]

Ok this should be RFAL. Looks like we both did the close/open 😅

[imjasonh]

/lgtm
/approve

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[jerop]

flagging that this change bumps the min k8s version to 1.19 so we need to add release notes for this (got some related errors developing on main) - bump in knative happened in knative/pkg#2157

cc @sbwsg (release captain for v0.27)

[vdemeester]

Also this means we will release 0.27 based on a non released version of knative/pkg. Probably not a big deal 😇