sec: relax fastapi upper bound + floor-pin tornado (CVE-2025-62727, CVE-2026-31958) #983

Job	Run time
find-tutorials	7s
test-00_sync/030_langgraph	2m 7s
test-00_sync/010_multiturn	2m 33s
test-10_async/00_base/020_streaming	2m 27s
test-10_async/00_base/010_multiturn	2m 43s
test-10_async/10_temporal/020_state_machine	3m 15s
test-10_async/10_temporal/010_agent_chat	2m 36s
test-10_async/00_base/040_other_sdks	2m 32s
test-10_async/00_base/000_hello_acp	2m 32s
test-10_async/10_temporal/000_hello_acp	2m 49s
test-10_async/00_base/080_batch_events	2m 43s
test-10_async/00_base/100_langgraph	2m 52s
test-00_sync/020_streaming	2m 39s
test-10_async/00_base/030_tracing	2m 21s
test-10_async/10_temporal/060_open_ai_agents_sdk_hello_world	2m 44s
test-10_async/10_temporal/050_agent_chat_guardrails	3m 8s
test-10_async/10_temporal/090_claude_agents_sdk_mvp	3m 2s
test-10_async/10_temporal/080_open_ai_agents_sdk_human_in_the_loop	2m 40s
test-00_sync/000_hello_acp	2m 35s
test-10_async/10_temporal/030_custom_activities	2m 31s
test-10_async/10_temporal/070_open_ai_agents_sdk_tools	3m 10s
Test Summary	3s
	54m 9s

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