fix(deps): update dependency langgraph to v0.2.22

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
langgraph	0.2.21 -> 0.2.22

---

Release Notes

langchain-ai/langgraph (langgraph)

v0.2.22

Compare Source

Changes since 0.2.21

• langgraph 0.2.22
• docs: clarify course free (#​1730)
• Retry subgraph starting at failing node (#​1695)
• Update core in poetry lock (#​1717)
• langgraph: use create_model_v2 and fallback on create_model (#​1708)
• add deprecation warning for no overall state (#​1698)

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), 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.