Bump anthropic from 0.39.0 to 0.42.0

Bumps [anthropic](https://github.com/anthropics/anthropic-sdk-python) from 0.39.0 to 0.42.0.
- [Release notes](https://github.com/anthropics/anthropic-sdk-python/releases)
- [Changelog](https://github.com/anthropics/anthropic-sdk-python/blob/main/CHANGELOG.md)
- [Commits](anthropics/anthropic-sdk-python@v0.39.0...v0.42.0)

---
updated-dependencies:
- dependency-name: anthropic
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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