Bump version to 0.4.2

[sdairs]

Summary

• bump clickhousectl and clickhouse-cloud-api to 0.4.2
• align the CLI API dependency, npm package, and Cargo lockfile
• leave PyPI unchanged because it derives the CLI version from Cargo

Verification

• cargo metadata --no-deps --format-version 1
• cargo fmt --all -- --check
• cargo test --workspace
• cargo clippy --workspace --all-targets -- -D warnings

Stack

• Position: child 34 of 34 in gh-stack #563
• Base: Add local server state machine subprocess tests #562 (stack/479-server-state-machine-tests)
• Parent PR should merge first.

[iskakaushik]

LGTM