upgrade helm version to 3.14.0

[wansir]

fix unexpected lint error:

==> Linting ks-core
[INFO] Chart.yaml: icon is recommended
[ERROR] templates/: template: ks-core/templates/kubesphere-config.yaml:13:17: executing "ks-core/templates/kubesphere-config.yaml" at <include "portal.host" .>: error calling include: template: ks-core/templates/_helpers.tpl:62:39: executing "portal.host" at <.Values.portal.https.port>: nil pointer evaluating interface {}.port

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