Upgrade to Node 22.18

[connor-baer]

Purpose

Vite 7 requires a newer Node.js version, might as well upgrade to Node v22, the currently active LTS release.

Approach and changes

• Use Node v22.18 for local development and CI
• Upgrade vulnerable dependencies

Definition of done

• Development completed
• Reviewers assigned
• Unit and integration tests
• Meets minimum browser support
• Meets accessibility requirements

[changeset-bot]

⚠️ No Changeset found

Latest commit: a1a5cfe

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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