chore(deps): bump kustomize to v5.2.1

[MPV]

This PR upgrades kustomize from 5.1.1 to 5.2.1:

• https://github.com/kubernetes-sigs/kustomize/releases/tag/kustomize%2Fv5.2.1

The main benefit I see is the new support for OCI based helm repos:

• kustomize: Add support for OCI based helm repos kubernetes-sigs/kustomize#5167

---

Checklist:

• Either (a) I've created an enhancement proposal and discussed it with the community, (b) this is a bug fix, or (c) this does not need to be in the release notes.
• The title of the PR states what changed and the related issues number (used for the release note).
• The title of the PR conforms to the Toolchain Guide
• I've included "Closes [ISSUE #]" or "Fixes [ISSUE #]" in the description to automatically close the associated issue.
• I've updated both the CLI and UI to expose my feature, or I plan to submit a second PR with them.
• Does this PR require documentation updates?
• I've updated documentation as required by this PR.
• Optional. My organization is added to USERS.md.
• I have signed off all my commits as required by DCO
• I have written unit and/or e2e tests for my change. PRs without these are unlikely to be merged.
• My build is green (troubleshooting builds).
• My new feature complies with the feature status guidelines.
• I have added a brief description of why this PR is necessary and/or what this PR solves.

---

Also note this upstream issue preventing me from using hack/installers/checksums/add-kustomize-checksums.sh:

• Releases >=5.2.0 missing checksums.txt kubernetes-sigs/kustomize#5403

Thus I:

1. cd hack/installers/checksums
2. commented out this line:
   

   argo-cd/hack/installers/checksums/add-kustomize-checksums.sh

   Line 7 in 973565e

   wget "https://github.com/kubernetes-sigs/kustomize/releases/download/kustomize%2Fv$1/checksums.txt"

3. downloaded them manually:

$ wget https://github.com/kubernetes-sigs/kustomize/releases/download/kustomize%2Fv5.2.1/kustomize_v5.2.1_darwin_amd64.tar.gz
$ wget https://github.com/kubernetes-sigs/kustomize/releases/download/kustomize%2Fv5.2.1/kustomize_v5.2.1_darwin_arm64.tar.gz
$ wget https://github.com/kubernetes-sigs/kustomize/releases/download/kustomize%2Fv5.2.1/kustomize_v5.2.1_linux_amd64.tar.gz
$ wget https://github.com/kubernetes-sigs/kustomize/releases/download/kustomize%2Fv5.2.1/kustomize_v5.2.1_linux_arm64.tar.gz
$ wget https://github.com/kubernetes-sigs/kustomize/releases/download/kustomize%2Fv5.2.1/kustomize_v5.2.1_linux_ppc64le.tar.gz
$ wget https://github.com/kubernetes-sigs/kustomize/releases/download/kustomize%2Fv5.2.1/kustomize_v5.2.1_linux_s390x.tar.gz

4. calculated checksums manually:

$ sha256sum kustomize_v5.2.1* > checksums.txt

5. ran ./add-kustomize-checksums.sh 5.2.1
6. this PR

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (973565e) 49.55% compared to head (f31a6f3) 49.55%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #16054   +/-   ##
=======================================
  Coverage   49.55%   49.55%           
=======================================
  Files         269      269           
  Lines       46595    46595           
=======================================
  Hits        23091    23091           
  Misses      21232    21232           
  Partials     2272     2272           

see 1 file with indirect coverage changes

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[MPV]

Any chance for including (cherry-picking/backporting) this into version 2.9?

As it fixes this bug:

• broken valuesInline in kustomize helmCharts:
  Helm and Kustomize Helm have different results kubernetes-sigs/kustomize#4905

[crenshaw-dev]

Yep, let's get this into 2.9. Thanks, @MPV!

[crenshaw-dev]

/cherry-pick release-2.9

[gcp-cherry-pick-bot]

Cherry-pick failed with Merge error 35a9e0cc6dfbd52ba4f97472bd57c3f18efa3c7d into temp-cherry-pick-6a0965-release-2.9

[crenshaw-dev]

@MPV would you mind opening a PR directly against release-2.9 to cherry-pick?

[MPV]

@crenshaw-dev Yes, please see:

• chore(deps): bump kustomize to v5.2.1 (cherry-pick 2.9) #16082