chore(runtime): upgrade ingress-nginx to 4.15.0

[plural-copilot]

Summary

• Upgrade the management runtime chart’s public and private ingress-nginx dependencies to chart 4.15.0, which provides controller 1.15.0.
• Regenerate the runtime Helm dependency lock and vendored ingress-nginx archive.
• Bump the runtime chart to 0.1.37; downstream consumers should pin this exact version.

Rationale

This is a prerequisite for management EKS 1.35 and is linked to Plural Service mgmt/runtime.

Validation

• helm dependency build (Dockerized Helm 3.16.4 with required repositories configured)
• helm lint . (1 chart linted, 0 failed)
• Verified vendored chart metadata: ingress-nginx 4.15.0, controller/appVersion 1.15.0
• Inspected the final diff with git diff --check

[plural-copilot]

This PR was generated by the codex Plural Agent Runtime. Here's some useful information you might want to know to evaluate the ai's perfomance:

Name	Details
💬 Prompt	Create one minimal PR in this repository that removes the EKS 1.35 blocker for the management runtime ingress-nginx only, linked to Plural Service mgmt/runtime....
🔗 Run history	View run history