[Rust][deps] Update Rust dependencies and jsonschema registry integration

[juharris]

Description

Resolves #220

Update Rust dependencies in the optify crate and migrate to the new jsonschema registry API.

Dependency Updates (rust/optify)

• config 0.15.14 → 0.15.23
• jsonschema 0.32.1 → 0.46.5
• notify-debouncer-full 0.6.0 → 0.7.0
• rayon 1.11.0 → 1.12.0
• regex 1.11.1 → 1.12.3
• serde 1.0.219 → 1.0.228
• serde_json 1.0.142 → 1.0.149
• unicase 2.8.1 → 2.9.0

serde_json updated to 1.0.149 in all other crates: optify-cli, optify-config (JS), optify_nif (Elixir), optify_ruby (Ruby).

Code Changes

• Update schema registry integration to use jsonschema 0.46.5's Registry API (Registry::new().add().prepare() + with_registry(&registry))
• Disable jsonschema default features (default-features = false) to avoid TLS backend cross-compilation issues in CI — both aws-lc-sys (default) and ring fail in Docker cross-compilation environments. All schema $ref are internal (#/definitions/...), so HTTP/file resolution is not needed.

Changelogs

• jsonschema
• config
• notify-debouncer-full
• rayon
• regex
• serde
• serde_json
• unicase