CRDs still present on namespaced install of recent releases

[t0rr3sp3dr0]

Checklist:

• I've searched in the docs and FAQ for my answer: https://bit.ly/argocd-faq.
• I've included steps to reproduce the bug.
• I've pasted the output of argocd version.

Describe the bug

PR #6022 removed CRDs from namespaced install manifests of Argo CD. But for some reason, this change has not been applied to release branches that were created since the PR got merged a year ago and it is only available on the master branch.

To Reproduce

Check the manifests for the lastest tag and latest release branch of Argo CD:
https://github.com/argoproj/argo-cd/blob/v2.3.3/manifests/namespace-install.yaml
https://github.com/argoproj/argo-cd/blob/release-2.3/manifests/namespace-install.yaml

Expected behavior

They should be like the one on master:
https://github.com/argoproj/argo-cd/blob/master/manifests/namespace-install.yaml

Version

v2.3.3

[t0rr3sp3dr0]

@alexmt @jannfis @kshamajain99 @sbose78

[jgwest]

This appears to have been resolved in recent releases.