upgrade helm version in deploy job

[horakihor]

What this PR does / why we need it:

This PR upgraded the helm chart docker image to support Helm 3 charts in this repo.

Which issue this PR fixes

• It fixes errors in the GitHub Actions

+ helm package /github/workspace/charts/graphite --destination /github/workspace/kiwigrid.github.io
building graphite chart...
Error: apiVersion 'v2' is not valid. The value must be "v1"

Special notes for your reviewer:

Checklist

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

• [x] DCO signed
• [ ] Chart Version bumped (if the pr is an update to an existing chart)
• [ ] Variables are documented in the README.md
• [ ] Title of the PR starts with chart name (e.g. [fluentd-elasticsearch])