Update liburing source URL to kernel.org #9083

Job	Run time
packages (buildjet-4vcpu-ubuntu-2204-arm, arm64)	13m 2s
packages (buildjet-4vcpu-ubuntu-2004, amd64)	7m 46s
packages (buildjet-4vcpu-ubuntu-2004, riscv64)	3m 57s
eve (arm64, xen, generic)	7m 41s
eve (arm64, kvm, generic)	9m 27s
eve (amd64, xen, generic)	9m 21s
eve (amd64, kvm, generic)	8m 24s
eve (amd64, kubevirt, generic)	10m 21s
eve (riscv64, mini, generic)	2m 58s
eve (amd64, kvm, rt)	8m 52s
eve (arm64, kvm, nvidia)	9m 56s
eve (arm64, kvm, imx8mp_pollux)	8m 50s
eve (arm64, kvm, imx8mp_epc_r3720)	7m 20s
	1h 47m 55s

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