fix(jest-snapshot): move @types/prettier to devDependencies

[Kloen]

Move @types/prettier to devDependencies to avoid conflicts with typescript projects using prettier>2.1.5.

Summary

I've been working on a project that uses TypeScript and Prettier directly, while working with it there were a few issues regarding the types (check and format functions).

I'm using prettier@3.x and jest@29.6.1 for testing. After getting some warnings about the types on my IDE, and given that prettier already ships it's own types I decided to check around, turns out that jest-snapshot was listing @types/prettier as a dependency. Not only that, but it's prettier@2.x so that were giving me erroneous warnings and IDE hints.

I don't see a reason to have @types/prettier as a dependency instead of a devDependency so...

Test plan

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: Kloen / name: Klöen Lansfiel (643ab16)
• ✅ login: SimenB / name: Simen Bekkhus (fe489db)

[netlify]

✅ Deploy Preview for jestjs ready!

Built without sensitive environment variables

Name	Link
🔨 Latest commit	fe489db
🔍 Latest deploy log	https://app.netlify.com/sites/jestjs/deploys/64b140900072be00071038d4
😎 Deploy Preview	https://deploy-preview-14328--jestjs.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[SimenB]

This is correct as the types are not used in the exported types: https://www.runpkg.com/?jest-snapshot@29.6.1/build/index.d.ts

[SimenB]

https://github.com/jestjs/jest/releases/tag/v29.6.2

[github-actions]

This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.
Please note this issue tracker is not a help forum. We recommend using StackOverflow or our discord channel for questions.