Add helmfile to CI

## 📚 Context
Based on our current CI we should bump the version on each PR to allow the action to run and test the helm. 

## ✔️ Solution
We can consider using helmfile to check the local helm chart on each PR. (without bumping the chart version)

## 🎯 Definition of Done
-   [ ] the CI should run and use helmfile to check the changes without bumping the version
