Update Helm Charts & Deployments

I need a Kubernetes specialist to refresh my existing Helm charts and related Deployment manifests. The charts currently package several pieces of the stack—APIs/backend services, a couple of frontend applications, and the supporting databases—but they are out-of-date and missing recent config tweaks.

Scope
• Audit the present Helm charts (Helm 3) and identify obsolete values or deprecated APIs.
• Apply the required fixes so each chart installs cleanly with kubectl apply / helm upgrade on a standard production cluster.
• Ensure deployments for the APIs, frontends, and databases start, pass readiness probes, and roll back cleanly.
• Provide a brief changelog or diff summary so I can see exactly what was updated.

This is a focused update rather than a ground-up rewrite, so I’m looking for concise, working adjustments that get the cluster back to a healthy, reproducible state.