Update helmfile.yaml of elastic-stack with 3.0.0
Update the repository of elastic-stack to https://charts.gitlab.io
This MR fixes #53 (closed) where the values.yaml are corresponding to newer v3.0.0 elastic-stack chart that is hosted at https://charts.gitlab.io
The chart location is https://gitlab.com/gitlab-org/charts/elastic-stack and the values of elastic-stack https://gitlab.com/gitlab-org/gitlab/-/raw/master/vendor/elastic_stack/values.yaml that get copied in Dockerfile don't work with existing helmfile of elastic-stack anymore
Edited by 🤖 GitLab Bot 🤖