Fix severe vulnerability in cross-spawn; convert project from CommonJS to ES Modules

[aasmith2021]

Description

This PR updates yorkie from using CommonJS modules to ES Modules, and updates all dependencies to the latest version. As a result, the version of Node needed to run yorkie is now at least version 20.6.0.

Updating the dependencies to the latest version fixes a severe vulnerability found in the cross-spawn dependency.

[aasmith2021]

Hi @yyx990803! I really enjoy using yorkie for its simplicity! I created this PR to update yorkie because:

• yorkie has execa v0.8.0 as a dependency
• execa v0.8.0 has cross-spawn v5.0.1 as a dependency

There's an advisory about a severe vulnerability using cross-spawn < 7.0.5, and I wanted to remove that vulnerability so that yorkie doesn't have any existing vulnerabilities.

Let me know if you see anything that needs to be updated - I'm happy to make any changes!

[hamish-smith]

Hi @yyx990803! I really enjoy using yorkie for its simplicity! I created this PR to update yorkie because:

• yorkie has execa v0.8.0 as a dependency
• execa v0.8.0 has cross-spawn v5.0.1 as a dependency

There's an advisory about a severe vulnerability using cross-spawn < 7.0.5, and I wanted to remove that vulnerability so that yorkie doesn't have any existing vulnerabilities.

Let me know if you see anything that needs to be updated - I'm happy to make any changes!

Literally came here looking to see if execa could be upgraded. Thankyou! @aasmith2021!

[aasmith2021]

Hi @yyx990803! Thank you for your work on yorkie — it's been a valuable tool that I've used on many projects. I put together this PR to help modernize some of its dependencies.

There seems to be some community interest in keeping it up to date. If you have a moment, I’d really appreciate your feedback. Totally understand if time is limited — just wanted to offer a small contribution to help. Thanks again!

[Loftee]

Came here for this exact issue. Would be great to have this PR merged in. @aasmith2021 thanks for your work!