Dockerfile: update containerd binary to v2.0.0 #5408

Job	Run time
build (windows/amd64)	3m 5s
build (freebsd/amd64)	2m 26s
test-freebsd-amd64	2m 31s
test-windows-amd64 (containerd, ./client)	4m 1s
test-windows-amd64 (containerd, ./cmd/buildctl)	2m 49s
test-windows-amd64 (containerd, ./worker/containerd)	2m 16s
test-windows-amd64 (containerd, ./solver)	1m 45s
test-windows-amd64 (containerd, ./frontend)	2m 18s
test-windows-amd64 (containerd, ./frontend/dockerfile)	36m 49s
test-windows-amd64 (./..., 1)	3m 46s
	1h 1m 46s

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