Disable HTTP/2 by updating knative/pkg

[khrm]

This disables HTTP/2 for webhook by updating to PR knative/pkg#2875 It fixes CVE-2023-44487.

Closes #7235

Changes

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Release Notes

This disables HTTP/2 for webhooks by updating knative/pkg dependency.

[khrm]

/assign @vdemeester @JeromeJu @dibyom @afrittoli

[khrm]

/kind security

[khrm]

/cherry-pick release-v0.53.x

[tekton-robot]

@khrm: once the present PR merges, I will cherry-pick it on top of release-v0.53.x in a new PR and assign it to you.

In response to this:

/cherry-pick release-v0.53.x

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.

[vdemeester]

Updating the description to mark that it fixes #7235.

[khrm]

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

[tekton-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: vdemeester, Yongxuanzhang

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[Yongxuanzhang]

/lgtm

[tekton-robot]

@khrm: #7324 failed to apply on top of branch "release-v0.53.x":

Applying: Disable HTTP/2 by updating knative/pkg
Using index info to reconstruct a base tree...
M	go.mod
M	go.sum
M	vendor/modules.txt
Falling back to patching base and 3-way merge...
Auto-merging vendor/modules.txt
Auto-merging go.sum
Auto-merging go.mod
CONFLICT (content): Merge conflict in 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 Disable HTTP/2 by updating knative/pkg
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-v0.53.x

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.

[khrm]

It seems we need to manually cherry-pick this for v0.53.x.