sec: relax fastapi upper bound + floor-pin tornado (CVE-2025-62727, CVE-2026-31958) #984

Job	Run time
find-tutorials	4s
test-00_sync/000_hello_acp	2m 27s
test-10_async/10_temporal/010_agent_chat	2m 19s
test-10_async/00_base/080_batch_events	2m 21s
test-10_async/00_base/000_hello_acp	2m 28s
test-00_sync/030_langgraph	2m 29s
test-10_async/00_base/100_langgraph	2m 23s
test-10_async/10_temporal/050_agent_chat_guardrails	2m 24s
test-10_async/00_base/020_streaming	2m 24s
test-00_sync/010_multiturn	2m 27s
test-10_async/00_base/040_other_sdks	2m 26s
test-10_async/10_temporal/030_custom_activities	2m 24s
test-10_async/10_temporal/070_open_ai_agents_sdk_tools	2m 25s
test-10_async/10_temporal/060_open_ai_agents_sdk_hello_world	2m 19s
test-00_sync/020_streaming	2m 25s
test-10_async/10_temporal/020_state_machine	2m 22s
test-10_async/00_base/010_multiturn	2m 18s
test-10_async/00_base/030_tracing	2m 23s
test-10_async/10_temporal/000_hello_acp	2m 8s
test-10_async/10_temporal/080_open_ai_agents_sdk_human_in_the_loop	2m 33s
test-10_async/10_temporal/090_claude_agents_sdk_mvp	2m 26s
Test Summary	6s
	48m 1s

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