Upgrade Node version in update-graphql-deps.yml

[gonzaloriestra]

WHY are these changes introduced?

There's a Node version mismatch between workflows:

• update-graphql-deps.yml generates and commits codegen output using Node 22.11.0
• tests-pr.yml re-generates and verifies those files using Node 24.1.0

The codegen pipeline includes an eslint --fix formatting step (graphql-codegen:formatting), which can produce subtly different output across Node versions. So files committed by the update workflow (Node 22) don't always match what the PR check regenerates (Node 24) — even with identical schemas and queries.

This explains the flakiness: eslint --fix is mostly stable across Node versions, but occasionally produces different formatting for certain files.

More info: https://shopify.slack.com/archives/C05E3BDFDRB/p1776201817435039

WHAT is this pull request doing?

Updates the Node version in update-graphql-deps.yml to match other workflows

How to test your changes?

Merge and run it

Checklist

• I've considered possible cross-platform impacts (Mac, Linux, Windows)
• I've considered possible documentation changes
• I've considered analytics changes to measure impact
• The change is user-facing, so I've added a changelog entry with pnpm changeset add

[gonzaloriestra]

Merge activity

• Apr 15, 12:10 PM UTC: A user started a stack merge that includes this pull request via Graphite.
• Apr 15, 12:11 PM UTC: @gonzaloriestra added this pull request to the GitHub merge queue with Graphite.