Bump jsondiffpatch and @browserbasehq/stagehand

Removes [jsondiffpatch](https://github.com/benjamine/jsondiffpatch). It's no longer used after updating ancestor dependency [@browserbasehq/stagehand](https://github.com/browserbase/stagehand/tree/HEAD/packages/core). These dependencies need to be updated together.


Removes `jsondiffpatch`

Updates `@browserbasehq/stagehand` from 2.5.2 to 3.0.1
- [Release notes](https://github.com/browserbase/stagehand/releases)
- [Changelog](https://github.com/browserbase/stagehand/blob/main/packages/core/CHANGELOG.md)
- [Commits](https://github.com/browserbase/stagehand/commits/@browserbasehq/[email protected]/packages/core)

---
updated-dependencies:
- dependency-name: jsondiffpatch
  dependency-version: 
  dependency-type: indirect
- dependency-name: "@browserbasehq/stagehand"
  dependency-version: 3.0.1
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]