Update to node 22

[anomiex]

Proposed changes:

Calypso has updated to node 22, which means it's time for us to do so as well.

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

p1729087608724439-slack-C05Q5HSS013
Announcement P2: pdWQjU-Zy-p2

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

No

Testing instructions:

• Everything work with the new Node version?

[github-actions]

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[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 WordPress.com Simple 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, and enable the update/node-22 branch.

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[zinigor]

Works on my end! I don't think Sync tests are related to the Node upgrade.

[anomiex]

Sync tests?

[zinigor]

There was an E2E test timing out on a Sync-related thing, not relevant to this change.