Update Node.js LTS to v20.19.0

[PeterDaveHello]

Description

Node.js v20 entered Maintenance LTS six months ago. Update the version from 20.11.0 (released over a year ago) to 20.19.0, the latest LTS release from last month.

This ensures the project leverages recent Node.js improvements, including security updates, and stays on a supported LTS track.

Checklist

• I've read the contributing guide
• The relevant docs, if any, have been updated or created
• The relevant tests, if any, have been updated or created

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[sestinj]

Hi @PeterDaveHello, yesterday we shared some updates with our contributors about how we're aiming to improve the contribution process. Part of this included the addition of a Contributor License Agreement (CLA) to protect both contributors and the project. We're reaching out to ask that previous contributors sign it.

Could you please take a moment to sign, or if you have any questions send me a message? (either here or nate@continue.dev would work)

To do so, you just need to post a comment below with the following text:

I have read the CLA Document and I hereby sign the CLA

❤️ Thank you for the work you've done on Continue, and let me know if you have any suggestions on how we can make the project even better!

[github-actions]

Thank you for your submission, we really appreciate it. Like many open-source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution. You can sign the CLA by just posting a Pull Request Comment same as the below format.

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I have read the CLA Document and I hereby sign the CLA

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_{You can retrigger this bot by commenting recheck in this Pull Request. Posted by the CLA Assistant Lite bot.}