chore(chart): release for v0.21.0

[vflaux]

What does it do ?

This PR updates the Helm chart for the v0.21.0 release.

Closes #6353

Motivation

More

• Yes, this PR title follows Conventional Commits
• Yes, I added unit tests
• Yes, I updated end user documentation accordingly

[k8s-ci-robot]

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[k8s-ci-robot]

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Details

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• charts/OWNERS

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[vflaux]

We may want to merge those PR before this one:

• feat(chart): Add ability to watch other namespace #6297
• fix(helm): missing quotes on container arguments when extraArgs is a map #6284
• fix(helm): missing quotes on container arguments #6264
• feat(chart): add support for bool extraArgs #6179

[coveralls]

Coverage Report for PR #6354

Coverage remained the same at 80.528%

Diff Coverage: No coverable lines changed

No coverage regressions found.

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Change from base Build 24045518355:	0.0%
Covered Lines:	17159
Relevant Lines:	21308

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💛 - Coveralls

[muhlba91]

is there any update to this?

the referenced open PRs seem to be waiting for reviewers and merges.