Update build image to v0.0.6

[tdmanv]

Change Overview

Update build image with the addition of helm.

Pull request type

Please check the type of change your PR introduces:

• 🚧 Work in Progress
• 🌈 Refactoring (no functional changes, no api changes)
• 🐹 Trivial/Minor
• 🐛 Bugfix
• 🌻 Feature
• 🗺️ Documentation
• 🤖 Test

Related

#423

Test Plan

[13:09:25]tom@tom-XPS-13-9360: (build-image-0.0.6)~/src/kanister/ make shell
launching a shell in the containerized build environment
/go/src/github.com/kanisterio/kanister # helm version
version.BuildInfo{Version:"v3.0.0", GitCommit:"e29ce2a54e96cd02ccfce88bee4f58bb6e2a28b6", GitTreeState:"clean", GoVersion:"go1.13.4"}

• 💪 Manual
• ⚡ Unit test
• 💚 E2E