Update dependencies and fix type issues (#1268)

Co-authored-by: Marcelo Trylesinski <marcelotryle@gmail.com>

tests/server/test_lowlevel_input_validation.py

@@ -21,7 +21,7 @@ async def run_tool_test(
     tools: list[Tool],
     call_tool_handler: Callable[[str, dict[str, Any]], Awaitable[list[TextContent]]],
     test_callback: Callable[[ClientSession], Awaitable[CallToolResult]],
-) -> CallToolResult:
+) -> CallToolResult | None:
     """Helper to run a tool test with minimal boilerplate.
 
     Args:
@@ -33,6 +33,7 @@ async def run_tool_test(
         The result of the tool call
     """
     server = Server("test")
+    result = None
 
     @server.list_tools()
     async def list_tools():

tests/server/test_lowlevel_output_validation.py

@@ -21,7 +21,7 @@ async def run_tool_test(
     tools: list[Tool],
     call_tool_handler: Callable[[str, dict[str, Any]], Awaitable[Any]],
     test_callback: Callable[[ClientSession], Awaitable[CallToolResult]],
-) -> CallToolResult:
+) -> CallToolResult | None:
     """Helper to run a tool test with minimal boilerplate.
 
     Args:
@@ -34,6 +34,8 @@ async def run_tool_test(
     """
     server = Server("test")
 
+    result = None
+
     @server.list_tools()
     async def list_tools():
         return tools

tests/server/test_lowlevel_tool_annotations.py

@@ -39,6 +39,7 @@ async def test_lowlevel_server_tool_annotations():
             )
         ]
 
+    tools_result = None
     server_to_client_send, server_to_client_receive = anyio.create_memory_object_stream[SessionMessage](10)
     client_to_server_send, client_to_server_receive = anyio.create_memory_object_stream[SessionMessage](10)