chore(deps): bump @anthropic-ai/sdk from 0.39.0 to 0.78.0

Bumps [@anthropic-ai/sdk](https://github.com/anthropics/anthropic-sdk-typescript) from 0.39.0 to 0.78.0.
- [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-v0.39.0...sdk-v0.78.0)

---
updated-dependencies:
- dependency-name: "@anthropic-ai/sdk"
  dependency-version: 0.78.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]