fix(runtime): bump ingress-nginx for EKS 1.35

[plural-copilot]

Summary

• bump both charts/runtime ingress-nginx dependencies from chart 4.14.1 / controller 1.14.1 to chart 4.15.1 / controller 1.15.1
• bump the runtime chart version from 0.1.36 to 0.1.37
• regenerate charts/runtime/Chart.lock and refresh the vendored ingress-nginx chart archive

Why

This is the minimal direct bootstrap fix to unblock management-cluster ingress-nginx on EKS 1.35. Downstream consumers should pick up the new runtime chart release in a follow-up plrl-up-demos PR.

Verification

• helm dependency update charts/runtime via Docker
• helm lint charts/runtime via Docker

Tags

/service runtime
/cluster mgmt

[plural-copilot]

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