Deno 2.8 adds 'audit fix', new CI workflows, and npm packaging support

Deno 2.8 introduces the new 'deno audit fix' command, which can automatically upgrade vulnerable npm packages to patched versions within specified constraints.

The release also adds 'deno ci' for reproducible installs in CI pipelines and 'deno pack' for building npm-publishable tarballs with Node compatibility.

Additional features include workspace-aware version management and new commands for transpiling TypeScript to JavaScript and exploring dependency origins.