build(deps): bump langgraph-checkpoint from 2.1.1 to 3.0.0 in /patcher

Bumps [langgraph-checkpoint](https://github.com/langchain-ai/langgraph) from 2.1.1 to 3.0.0.
- [Release notes](https://github.com/langchain-ai/langgraph/releases)
- [Commits](langchain-ai/langgraph@checkpoint==2.1.1...checkpoint==3.0.0)

---
updated-dependencies:
- dependency-name: langgraph-checkpoint
  dependency-version: 3.0.0
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

patcher/pyproject.toml

@@ -10,7 +10,7 @@ dependencies = [
     "common[full]",
     "langchain-community ~=0.3.27",
     "langgraph ~=0.6.6",
-    "langgraph-checkpoint ~=2.1.1",
+    "langgraph-checkpoint~=3.0.0",
     "openai ~=1.100.2",
     "program-model",
     "pydantic-settings ~=2.7.1",