build(deps): bump tornado from 6.5.2 to 6.5.5 #1000

Job	Run time
find-tutorials	3s
test-00_sync/030_langgraph	2m 37s
test-10_async/00_base/100_langgraph	2m 41s
test-00_sync/010_multiturn	2m 34s
test-10_async/00_base/010_multiturn	2m 45s
test-10_async/10_temporal/000_hello_acp	2m 21s
test-10_async/00_base/020_streaming	2m 39s
test-10_async/00_base/080_batch_events	3m 7s
test-00_sync/000_hello_acp	2m 1s
test-10_async/00_base/040_other_sdks	8m 16s
test-10_async/00_base/030_tracing	1m 55s
test-10_async/10_temporal/020_state_machine	2m 19s
test-10_async/10_temporal/030_custom_activities	2m 28s
test-00_sync/020_streaming	2m 30s
test-10_async/00_base/000_hello_acp	2m 3s
test-10_async/10_temporal/090_claude_agents_sdk_mvp	2m 29s
test-10_async/10_temporal/070_open_ai_agents_sdk_tools	2m 9s
test-10_async/10_temporal/080_open_ai_agents_sdk_human_in_the_loop	2m 29s
test-10_async/10_temporal/010_agent_chat	2m 31s
test-10_async/10_temporal/060_open_ai_agents_sdk_hello_world	2m 23s
test-10_async/10_temporal/050_agent_chat_guardrails	2m 19s
Test Summary	4s
	54m 43s

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