Makefile: fixup for Go 1.23 #6125

Job	Run time
cross-i386	1m 28s
cross-i386 (runc_nodmz)	1m 21s
test (ubuntu-20.04, 1.20.x, rootless, -race)	6m 34s
test (ubuntu-20.04, 1.20.x, rootless)	6m 5s
test (ubuntu-20.04, 1.20.x, -race)	7m 16s
test (ubuntu-20.04, 1.20.x)	6m 36s
test (ubuntu-20.04, 1.21.x, rootless, -race)	6m 31s
test (ubuntu-20.04, 1.21.x, rootless)	6m 2s
test (ubuntu-20.04, 1.21.x, -race)	7m 15s
test (ubuntu-20.04, 1.21.x)	7m 22s
test (ubuntu-20.04, 1.21.x, criu-dev)	6m 58s
test (ubuntu-22.04, 1.20.x, rootless, -race)	10m 16s
test (ubuntu-22.04, 1.20.x, rootless)	10m 17s
test (ubuntu-22.04, 1.20.x, -race)	8m 33s
test (ubuntu-22.04, 1.20.x)	8m 10s
test (ubuntu-22.04, 1.21.x, rootless, -race)	10m 18s
test (ubuntu-22.04, 1.21.x, rootless)	9m 59s
test (ubuntu-22.04, 1.21.x, -race)	8m 35s
test (ubuntu-22.04, 1.21.x)	7m 44s
test (ubuntu-22.04, 1.21.x, runc_nodmz)	7m 52s
test (ubuntu-22.04, 1.21.x, criu-dev)	8m 31s
test (actuated-arm64-6cpu-8gb, 1.21.x, rootless)	11m 54s
test (actuated-arm64-6cpu-8gb, 1.21.x)	8m 30s
	2h 54m 7s

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