Bump @anthropic-ai/sdk from 0.19.0 to 0.19.1

Bumps [@anthropic-ai/sdk](https://github.com/anthropics/anthropic-sdk-typescript) from 0.19.0 to 0.19.1.
- [Release notes](https://github.com/anthropics/anthropic-sdk-typescript/releases)
- [Changelog](https://github.com/anthropics/anthropic-sdk-typescript/blob/main/CHANGELOG.md)
- [Commits](anthropics/anthropic-sdk-typescript@sdk-v0.19.0...sdk-v0.19.1)

---
updated-dependencies:
- dependency-name: "@anthropic-ai/sdk"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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