feat: enable labeling of deployments

[dirien]

What this PR does / why we need it:

This PR adds the functionality of adding labels to the Deployment resource.

Which issue this PR fixes

(optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged)

• fixes #

Special notes for your reviewer:

Checklist

• [x] DCO signed
• [x] Chart Version bumped
• [x] helm-docs are updated
• [x] Helm chart is tested
• [x] Update artifacthub.io/changes in Chart.yaml
• [x] Run make reviewable

[stefanprodan]

You've changed the YAML indentation and this breaks CI, undo those changes please.

[dirien]

Done @stefanprodan, sorry did not saw this.