chore: restrict a2a-sdk version (#787)

Author: andreitava-uip

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "uipath-langchain"
-version = "0.9.33"
+version = "0.9.34"
 description = "Python SDK that enables developers to build and deploy LangGraph agents to the UiPath Cloud Platform"
 readme = { file = "README.md", content-type = "text/markdown" }
 requires-python = ">=3.11"
@@ -23,7 +23,7 @@ dependencies = [
     "mcp==1.26.0",
     "langchain-mcp-adapters==0.2.1",
     "pillow>=12.1.1",
-    "a2a-sdk>=0.2.0",
+    "a2a-sdk>=0.2.0,<1.0.0",
 ]
 
 classifiers = [