use latest helm binaries from helm (was: RH mirror)

[adietish]

vscode-openshift-tools use 3.16.1 helm binaries available from https://get.helm.sh.

https://github.com/redhat-developer/vscode-openshift-tools/blob/f01037a1f4bce45025817ee0d49f918ca87b5285/src/tools.json#L140

url": "https://get.helm.sh/helm-v3.16.1-windows-amd64.zip",

We should switch from using our RH mirror to these binaries.