release(checkpoint-sqlite): 3.1.2 (#9288)

Version bump only. No library code changes in this PR.

Unreleased since `checkpointsqlite==3.1.1`:

- #8617 - widen `Store` `put` value type to `Mapping[str, Any]`
- #8557 - walk delta ancestors by parent pointer
- #8544 - order delta channel replay by task path
- #9217 - validate namespace labels before store dispatch
- #9262 - treat an empty `checkpoint_id` as the latest in delta history

Follows `checkpoint==4.3.0`, which is already live on PyPI. #8544 raised
the floor to `langgraph-checkpoint>=4.3.0`, so this release needs it.

libs/checkpoint-sqlite/pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "langgraph-checkpoint-sqlite"
-version = "3.1.1"
+version = "3.1.2"
 description = "Library with a SQLite implementation of LangGraph checkpoint saver."
 authors = []
 requires-python = ">=3.10"

libs/checkpoint-sqlite/uv.lock

@@ -360,7 +360,7 @@ test = [
 
 [[package]]
 name = "langgraph-checkpoint-sqlite"
-version = "3.1.1"
+version = "3.1.2"
 source = { editable = "." }
 dependencies = [
     { name = "aiosqlite" },

libs/langgraph/uv.lock

@@ -1734,7 +1734,7 @@ test = [
 
 [[package]]
 name = "langgraph-checkpoint-sqlite"
-version = "3.1.1"
+version = "3.1.2"
 source = { editable = "../checkpoint-sqlite" }
 dependencies = [
     { name = "aiosqlite" },

libs/prebuilt/uv.lock

@@ -467,7 +467,7 @@ test = [
 
 [[package]]
 name = "langgraph-checkpoint-sqlite"
-version = "3.1.1"
+version = "3.1.2"
 source = { editable = "../checkpoint-sqlite" }
 dependencies = [
     { name = "aiosqlite" },