fix: widen fastapi constraint for starlette CVE-2025-62727 #975

Job	Run time
find-tutorials	3s
test-10_async/00_base/000_hello_acp	54s
test-00_sync/030_langgraph	50s
test-10_async/00_base/020_streaming	48s
test-10_async/00_base/080_batch_events	53s
test-10_async/00_base/010_multiturn	42s
test-00_sync/010_multiturn	1m 0s
test-10_async/10_temporal/050_agent_chat_guardrails	55s
test-10_async/10_temporal/070_open_ai_agents_sdk_tools	47s
test-00_sync/000_hello_acp	56s
test-10_async/10_temporal/080_open_ai_agents_sdk_human_in_the_loop	51s
test-10_async/10_temporal/020_state_machine	58s
test-10_async/10_temporal/030_custom_activities	1m 1s
test-10_async/00_base/100_langgraph	55s
test-10_async/00_base/030_tracing	54s
test-00_sync/020_streaming	59s
test-10_async/00_base/040_other_sdks	58s
test-10_async/10_temporal/000_hello_acp	57s
test-10_async/10_temporal/060_open_ai_agents_sdk_hello_world	47s
test-10_async/10_temporal/090_claude_agents_sdk_mvp	51s
test-10_async/10_temporal/010_agent_chat	54s
Test Summary	5s
	17m 58s

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