Update @types/jest to the latest version � (#764)

Summary:
## The devDependency [types/jest](https://github.com/DefinitelyTyped/DefinitelyTyped) was updated from `24.9.1` to `25.1.0`.
This version is **not covered** by your **current version range**.

If you don’t accept this pull request, your project will work just like it did before. However, you might be missing out on a bunch of new features, fixes and/or performance improvements from the dependency update.

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**Publisher:** [types](https://www.npmjs.com/~types)
**License:** MIT

[Find out more about this release](https://github.com/DefinitelyTyped/DefinitelyTyped).

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<details>
  <summary>FAQ and help</summary>

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Your [Greenkeeper](https://greenkeeper.io) bot 🌴
Pull Request resolved: https://github.com/facebook/flipper/pull/764

Reviewed By: jknoxville, mweststrate

Differential Revision: D19602722

Pulled By: passy

fbshipit-source-id: 8f20b325389c68e4422842eea164c2f6fc84162a

package.json

@@ -69,7 +69,7 @@
     "@types/fb-watchman": "^2.0.0",
     "@types/fs-extra": "^8.0.0",
     "@types/invariant": "^2.2.31",
-    "@types/jest": "^24.0.16",
+    "@types/jest": "^25.1.0",
     "@types/lodash.debounce": "^4.0.6",
     "@types/lodash.isequal": "^4.5.5",
     "@types/node": "^12.12.20",