check_and_deploy_helm3.sh does a helm lint before it upgrades helm to v3, which causes it to fail for any helm v3 Charts.
Linting Helm Chart
Error: 1 chart(s) linted, 1 chart(s) failed
==> Linting chart/drupal
[ERROR] Chart.yaml: apiVersion 'v2' is not valid. The value must be "v1"
[ERROR] templates/: apiVersion 'v2' is not valid. The value must be "v1"