Bump filelock from 3.19.1 to 3.20.3 #712

Job	Run time
find-tutorials	5s
test-10_async/00_base/000_hello_acp	2m 39s
test-10_async/10_temporal/010_agent_chat	11m 18s
test-10_async/00_base/010_multiturn	3m 41s
test-10_async/00_base/080_batch_events	3m 16s
test-00_sync/020_streaming	3m 48s
test-10_async/10_temporal/050_agent_chat_guardrails	2m 43s
test-10_async/00_base/030_tracing	2m 53s
test-10_async/10_temporal/090_claude_agents_sdk_mvp	2m 20s
test-00_sync/000_hello_acp	1m 5s
test-10_async/00_base/040_other_sdks	11m 19s
test-10_async/10_temporal/060_open_ai_agents_sdk_hello_world	3m 17s
test-00_sync/010_multiturn	4m 6s
test-10_async/10_temporal/020_state_machine	8m 36s
test-10_async/00_base/020_streaming	3m 23s
test-10_async/10_temporal/000_hello_acp	2m 34s
test-10_async/10_temporal/030_custom_activities	2m 57s
test-10_async/10_temporal/080_open_ai_agents_sdk_human_in_the_loop	3m 9s
test-10_async/10_temporal/070_open_ai_agents_sdk_tools	3m 20s
Test Summary	5s
	1h 16m 34s

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