Bump urllib3 from 1.26.20 to 2.6.3 #899

Job	Run time
find-tutorials	4s
test-10_async/10_temporal/010_agent_chat	8m 50s
test-10_async/00_base/010_multiturn	3m 39s
test-10_async/00_base/040_other_sdks	9m 0s
test-10_async/10_temporal/030_custom_activities	2m 31s
test-10_async/10_temporal/020_state_machine	8m 46s
test-00_sync/020_streaming	3m 22s
test-10_async/00_base/000_hello_acp	2m 25s
test-10_async/10_temporal/070_open_ai_agents_sdk_tools	3m 19s
test-10_async/10_temporal/080_open_ai_agents_sdk_human_in_the_loop	3m 14s
test-10_async/10_temporal/000_hello_acp	2m 52s
test-00_sync/000_hello_acp	3m 4s
test-10_async/10_temporal/060_open_ai_agents_sdk_hello_world	3m 18s
test-10_async/10_temporal/050_agent_chat_guardrails	2m 53s
test-10_async/00_base/030_tracing	3m 39s
test-10_async/10_temporal/090_claude_agents_sdk_mvp	2m 48s
test-00_sync/010_multiturn	3m 57s
test-10_async/00_base/020_streaming	3m 31s
test-10_async/00_base/080_batch_events	3m 43s
Test Summary	3s
	1h 14m 58s

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