chore(deps): update dependency @anthropic-ai/sdk to v0.55.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@anthropic-ai/sdk	0.54.0 -> 0.55.0

---

Release Notes

anthropics/anthropic-sdk-typescript (@​anthropic-ai/sdk)

v0.55.0

Full Changelog: sdk-v0.54.0...sdk-v0.55.0

Features

• client: add support for endpoint-specific base URLs (9be46a8)

Bug Fixes

• client: explicitly copy fetch in withOptions (3a5909b)
• internal: resolve conflict (acfff05)
• publish script — handle NPM errors correctly (c4a6666)
• stream: avoid event listener leak (eb272af)

Chores

• ci: enable for pull requests (8505818)
• client: refactor imports (d5dff04)
• internal: add pure annotations, make base APIResource abstract (183d39c)
• readme: update badges (147f321)
• readme: use better example snippet for undocumented params (5beafd5)

---

Configuration

📅 Schedule: Branch creation - "before 3am" (UTC), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.