Backport of NET-5272/add docs team code owners to review helm values description into release/1.5.x

[hc-github-team-consul-core]

Backport

This PR is auto-generated from #4237 to be assessed for backporting due to the inclusion of the label backport/1.5.x.

🚨

Warning automatic cherry-pick of commits failed. If the first commit failed,
you will see a blank no-op commit below. If at least one commit succeeded, you
will see the cherry-picked commits up to, not including, the commit where
the merge conflict occurred.

The person who merged in the original PR is:
@JadhavPoonam
This person should manually cherry-pick the original PR into a new backport PR,
and close this one when the manual backport PR is merged in.

merge conflict error: unable to process merge commit: "14a5b7757862958b084601aff7a9c65bab4f3280", automatic backport requires rebase workflow

The below text is copied from the body of the original PR.

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Changes proposed in this PR

• Adds a CODEOWNERS file that would request a review from the docs team when helm values are changed. This review is non-blocking as we don't set the required review setting in the branch protection rules.

How I've tested this PR

It should take effect in the next PR.

### How I expect reviewers to test this PR ###

Checklist

• Tests added
• CHANGELOG entry added

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Overview of commits

• f86f00e - 14a5b77 - bc1c1f9