Bump helm chart to 4.0.3

[yonatankahana]

we forgot to bump the version in #56 but we modified the chart and caused build failure.

[yonatankahana]

/approve
/lgtm

edit:
😄

[k8s-ci-robot]

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[james-d-elliott]

The ct lint command can be configured to fail when the chart is changed and not version bumped to prevent a merge like this. Example:

https://github.com/authelia/chartrepo/blob/master/.buildkite/ct.yaml#L5

Also looks like there is an action: https://github.com/helm/chart-testing-action

[FernandoMorais]

Hi guys!
Some update on this? This change is exactly what I need here. LOL

[yonatankahana]

The ct lint command can be configured to fail when the chart is changed and not version bumped to prevent a merge like this. Example:

https://github.com/authelia/chartrepo/blob/master/.buildkite/ct.yaml#L5

Also looks like there is an action: https://github.com/helm/chart-testing-action

good idea that can prevent such mistakes. follow #66

[kmova]

/approve
/lgtm

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