build: upgrade fern to latest

[dslovinsky]

Description

Test upgrading Fern to latest

Related Issues

Changes Made

Testing

• I have tested these changes locally
• I have run the validation scripts (pnpm run validate)
• I have checked that the documentation builds correctly

[github-actions]

🌿 Documentation Preview

Name	Status	Preview	Updated (UTC)
Alchemy Docs	✅ Ready	🔗 Visit Preview	Dec 11, 2025, 10:08 PM

[Copilot]

Pull request overview

This PR upgrades the Fern API tooling from version 0.84.7 to 3.13.0, representing a major version bump that brings the project up to date with the latest Fern tooling capabilities.

Key Changes:

• Updated fern-api dependency from 0.84.7 to 3.13.0
• Updated Fern configuration version to match the new dependency version

Reviewed changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated 1 comment.

File	Description
package.json	Updates the fern-api dependency to version 3.13.0
fern/fern.config.json	Updates the Fern configuration version to align with the upgraded dependency

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

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