fix: Do not fail on deps when chart is fetched by go-getter

[mumoshu]

The below now works:

releases:
- name: pinpoint
  chart: git::https://github.com/pinpoint-apm/pinpoint-kubernetes.git@pinpoint?ref=master

Trying to use chartify with go-getter on a broken chart might require you to add skipDeps: true, as originally intended in #1548:

repositories:
- name: linkerd
  url: https://helm.linkerd.io/stable

releases:
- name: linkerd
  chart: linkerd/linkerd2
  version: "2.8.1"
  skipDeps: true
  forceNamespace: linkerd
  values:
  - global:
      identityTrustAnchorsPEM: aaa
    identity:
      issuer:
        crtExpiry: foobar
        tls:
          crtPEM: foo
          keyPEM: bar

Fixes #1847