Bump jest and @types/jest in /frontend

Bumps [jest](https://github.com/jestjs/jest/tree/HEAD/packages/jest) and [@types/jest](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/jest). These dependencies needed to be updated together.

Updates `jest` from 29.7.0 to 30.0.1
- [Release notes](https://github.com/jestjs/jest/releases)
- [Changelog](https://github.com/jestjs/jest/blob/main/CHANGELOG.md)
- [Commits](https://github.com/jestjs/jest/commits/v30.0.1/packages/jest)

Updates `@types/jest` from 29.5.14 to 30.0.0
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/jest)

---
updated-dependencies:
- dependency-name: jest
  dependency-version: 30.0.1
  dependency-type: direct:development
  update-type: version-update:semver-major
- dependency-name: "@types/jest"
  dependency-version: 30.0.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

frontend/sync-client/package.json

@@ -20,9 +20,9 @@
         "reconcile-text": "^0.5.0"
     },
     "devDependencies": {
-        "@types/jest": "^29.5.14",
+        "@types/jest": "^30.0.0",
         "@types/node": "^22.15.30",
-        "jest": "^29.7.0",
+        "jest": "^30.1.1",
         "ts-jest": "^29.3.4",
         "ts-loader": "^9.5.2",
         "tslib": "2.8.1",