release(langchain): 1.0.0a6 (#33024)

w/ improvements to HITL, state schema merging, dynamic system prompt

libs/langchain_v1/pyproject.toml

@@ -14,7 +14,7 @@ dependencies = [
 ]
 
 name = "langchain"
-version = "1.0.0a5"
+version = "1.0.0a6"
 description = "Building applications with LLMs through composability"
 readme = "README.md"
 

libs/langchain_v1/uv.lock

@@ -1,5 +1,5 @@
 version = 1
-revision = 3
+revision = 2
 requires-python = ">=3.10"
 resolution-markers = [
     "python_full_version >= '3.13' and platform_python_implementation == 'PyPy'",
@@ -1552,7 +1552,7 @@ wheels = [
 
 [[package]]
 name = "langchain"
-version = "1.0.0a5"
+version = "1.0.0a6"
 source = { editable = "." }
 dependencies = [
     { name = "langchain-core" },