Handle the two types of dependencies (array and schema)

[chrisghill]

No description provided.

[Copilot]

Pull Request Overview

This PR updates the JSON Schema handling to support two different types of dependencies: array dependencies (map[string][]string) and schema dependencies (map[string]*Schema). This aligns with JSON Schema specifications that allow dependencies to be either property names or schema objects.

• Replaces the single Dependencies field with DependenciesRaw for marshaling and a generic Dependencies field for runtime usage
• Adds marshaling/unmarshaling logic to handle both dependency types by attempting to parse as array dependencies first, then falling back to schema dependencies
• Updates property expansion logic to only process schema-type dependencies

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 3 comments.

File	Description
pkg/schema/types.go	Replaces Dependencies field with DependenciesRaw and generic Dependencies field
pkg/schema/marshal.go	Adds marshaling/unmarshaling logic for both dependency types
pkg/schema/expand.go	Updates property expansion to handle only schema-type dependencies
pkg/helm/helmtoschema.go	Adds safety check for empty document content

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