fix: replace uuid with crypto.randomUUID() for CommonJS compatibility (#452)

The uuid package v12+ is ESM-only, which breaks CommonJS projects
    on Node < 22 and AWS Lambda. Replace with Node's built-in
    crypto.randomUUID() (available since Node 14.17.0).

    - Remove uuid and @types/uuid dependencies
    - Update minimum Node version to 14.17.0
    - Regenerate package-lock.json files
    - Add test:cjs script to catch ESM-only dependencies

    Fixes #451

Author: TheRealAgentK

AGENTS.md

@@ -64,7 +64,6 @@ npm run prettier   # Format all source files
 ## Key Dependencies
 
 - `stack-trace`: Stack trace parsing
-- `uuid`: Unique identifier generation
 - `debug`: Debug logging (enabled via `DEBUG=raygun`)
 
 ## Examples