Use a maintained action for "changed files"

[vdemeester]

Changes

This is an alternative to #7360.

Closes #7360.

Submitter Checklist

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

• Has Docs if any changes are user facing, including updates to minimum requirements e.g. Kubernetes version bumps
• Has Tests included if any functionality added or changed
• Follows the commit message standard
• Meets the Tekton contributor standards (including functionality, content, code)
• Has a kind label. You can add one by adding a comment on this PR that contains /kind <type>. Valid types are bug, cleanup, design, documentation, feature, flake, misc, question, tep
• Release notes block below has been updated with any user facing changes (API changes, bug fixes, changes requiring upgrade notices or deprecation warnings). See some examples of good release notes.
• Release notes contains the string "action required" if the change requires additional action from users switching to the new release

Release Notes

NONE

[vdemeester]

/kind misc

[tekton-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jerop

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Details

Needs approval from an approver in each of these files:

• OWNERS [jerop]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[vdemeester]

/hold

[vdemeester]

/hold cancel

[afrittoli]

/lgtm

[JeromeJu]

/cherry-pick release-v0.53.x
We would also need this for the cherry-pick PR to work on v0.53 to pass the 'woke' tests now.

[tekton-robot]

@JeromeJu: #7364 failed to apply on top of branch "release-v0.53.x":

Applying: Use a maintained action for "changed files"
.git/rebase-apply/patch:23: trailing whitespace.
        
warning: 1 line adds whitespace errors.
Using index info to reconstruct a base tree...
M	pkg/reconciler/taskrun/resources/taskref_test.go
M	pkg/reconciler/taskrun/taskrun_test.go
Falling back to patching base and 3-way merge...
Auto-merging pkg/reconciler/taskrun/taskrun_test.go
Auto-merging pkg/reconciler/taskrun/resources/taskref_test.go
CONFLICT (content): Merge conflict in pkg/reconciler/taskrun/resources/taskref_test.go
error: Failed to merge in the changes.
hint: Use 'git am --show-current-patch=diff' to see the failed patch
Patch failed at 0001 Use a maintained action for "changed files"
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".

Details

In response to this:

/cherry-pick release-v0.53.x
We would also need this for the cherry-pick PR to work on v0.53 to pass the 'woke' tests now.

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.