argocd: update quay.io/argoproj/argocd Docker tag to v2.9.1

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
quay.io/argoproj/argocd	Kustomization	patch	v2.9.0 -> v2.9.1

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Release Notes

argoproj/argo-cd (quay.io/argoproj/argocd)

### [`v2.9.1`](https://togithub.com/argoproj/argo-cd/compare/v2.9.0-rc2...v2.9.1) [Compare Source](https://togithub.com/argoproj/argo-cd/compare/v2.9.0...v2.9.1)

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