Bump uv version to 0.5.15 (#5030) #12766

Job	Run time
build_ee_312	0s
build	14m 49s
build_ee	15m 16s
build_full	0s
build_slim	0s
run_integration_test	3m 51s
build_ee_nsjail	2m 16s
build_ee_cuda	0s
attach_amd64_binary_to_release	0s
build_ee_full	0s
build_ee_slim	0s
publish_ecr_s3	2m 4s
build_ee_reports_privately	1m 36s
tag_latest_ee	24s
tag_latest	1m 4s
verify_ee_image_vulnerabilities	0s
	41m 20s

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