Helm Repository down

the helm registry is down https://charts.deliveryhero.io/index.yaml since around 9:45am on 2nd october
```
Gateway time-out Error code 504
Visit [cloudflare.com](https://www.cloudflare.com/5xx-error-landing?utm_source=errorcode_504&utm_campaign=charts.deliveryhero.io) for more information.
```

Related Issue:
#45 