chore(deps): update dependency langchain-anthropic to v1

This MR contains the following updates:

Package	Change	Age	Confidence
langchain-anthropic (source, changelog)	>=0.3.0,<0.4.0 -> >=1.0.1,<1.1.0

View the Renovate pipeline for this MR

---

Configuration

📅 Schedule: Branch creation - "every weekend" (UTC), Automerge - At any time (no schedule defined).

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

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

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

---

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

---

This MR has been generated by Renovate Bot.