Remove deps on node-fetch

[anomiex]

Proposed changes:

Remove deps on node-fetch. Node has native fetch now.

Other information:

• Have you written new tests for your changes, if applicable?
• Have you checked the E2E test CI results, and verified that your changes do not break them?
• Have you tested your changes on WordPress.com, if applicable (if so, you'll see a generated comment below with a script to run)?

Jetpack product discussion

None

Does this pull request change what data or activity we track or use?

No

Testing instructions:

• Both removed instances are in E2E related code, so are the E2Es happy?

[github-actions]

Are you an Automattician? Please test your changes on all WordPress.com environments to help mitigate accidental explosions.

• To test on WoA, go to the Plugins menu on a WoA dev site. Click on the "Upload" button and follow the upgrade flow to be able to upload, install, and activate the Jetpack Beta plugin. Once the plugin is active, go to Jetpack > Jetpack Beta, select your plugin (Jetpack or WordPress.com Site Helper), and enable the remove/node-fetch-dep branch.
• To test on Simple, run the following command on your sandbox:

bin/jetpack-downloader test jetpack remove/node-fetch-dep

bin/jetpack-downloader test jetpack-mu-wpcom-plugin remove/node-fetch-dep

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[github-actions]

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Code Coverage Summary

This PR did not change code coverage!

That could be good or bad, depending on the situation. Everything covered before, and still is? Great! Nothing was covered before? Not so great. 🤷

Full summary · PHP report · JS report

[tbradsha]

Looks like it's been listed as stable in Node since v21. The changes check out.

[tbradsha]

Noting there's one comment that references node-fetch:

jetpack/projects/js-packages/critical-css-gen/tests/lib/mock-fetch.js

Line 5 in 59ea1b8

* Mocked out version of node-fetch; allows fetching local resources from the data directory.

[anomiex]

Not sure what exactly that's referring to. If it's referring to the node-fetch package, it's left over from before some past refactor that had already removed it. 🤷