v0.6.1 — dependency updates + CI fix

Fixes

• All dependencies updated — 0 outdated (was 7), including breaking changes:
  • rand 0.9→0.10 (RngExt API migration)
  • rust-mcp-sdk 0.8.3→0.9 (BTreeMap schemas, message_observer)
  • coset 0.3→0.4 (WebAuthn types)
  • roxmltree 0.20→0.21, tungstenite 0.24→0.28, rquickjs 0.9→0.11, criterion 0.6→0.8
• CI green — fixed rustfmt compliance for Rust 2024 edition
• Contact emails — replaced non-existent *@parkkola.dev with actual address in CODE_OF_CONDUCT.md and SECURITY.md
• SECURITY.md — added v0.6.x to supported versions

Install

cargo install nab
# or
brew install nab
# or
cargo binstall nab

Full changelog: v0.6.0...v0.6.1