[velero] Add version label to deployment

[wyattfry]

Special notes for your reviewer:

This PR adds the Kubernetes-recommended label "app.kubernetes.io/version" to the Deployment and its Pods. https://kubernetes.io/docs/concepts/overview/working-with-objects/common-labels/#labels

The value of the version label:

The current version of the application (e.g., a SemVer 1.0, revision hash, etc.)

Checklist

[Place an '[x]' (no spaces) in all applicable fields. Please remove unrelated fields.]

• [x] DCO signed
• [x] Chart Version bumped, please refer to the chart version instruction
• [x] Variables are documented in the values.yaml or README.md
• [x] Title of the PR starts with chart name (e.g. [velero])

[wyattfry]

@aramprice @weseven could i please have one more review?

[aramprice]

@wyattfry - you may have tagged the wrong person, I don't have context on this codebase.

[wyattfry]

@wyattfry - you may have tagged the wrong person, I don't have context on this codebase.

Ah, sorry about that