Wrong override for jiva image in helm chart in release 3.10.0

[cmontemuino]

The imageTag override for jiva subchart should not use an older version than what's defined in https://github.com/openebs/jiva-operator/blob/v3.6.0/deploy/helm/charts/values.yaml#L6

According to jiva chart, it is using version 3.4.0) (ref: https://github.com/openebs/charts/blob/openebs-3.10.0/charts/openebs/values.yaml#L644)

[cmontemuino]

I can submit a PR to fix this if it is ok.