Publish /healthcheck again
<strike>It is needed by argocd</strike>

<img width="143" alt="Capture d’écran 2023-03-02 à 13 22 09" src="https://user-images.githubusercontent.com/1676121/222427779-9e56ddc4-b40e-4334-b6fb-5712f8df7b92.png">

It is needed by the ALB

It's defined at https://github.com/huggingface/datasets-server/blob/fb48ed36cd41b13fba88b6b18072faf1bbd1fb62/chart/env/prod.yaml#L125
Publish /healthcheck again: <strike>It is needed by argocd</strike>

<img width="143" alt="Capture d’écran 2023-03-02 à 13 22 09" src="https://user-images.githubusercontent.com/1676121/222427779-9e56ddc4-b40e-4334-b6fb-5712f8df7b92.png">

It is needed by the ALB

It's defined at https://github.com/huggingface/datasets-server/blob/fb48ed36cd41b13fba88b6b18072faf1bbd1fb62/chart/env/prod.yaml#L125