updates and fixes to linters #3188

Job	Run time
prepare	9s
binaries (darwin/amd64)	1m 8s
binaries (darwin/arm64)	59s
binaries (linux/amd64)	2m 24s
binaries (linux/arm/v7)	2m 15s
binaries (linux/arm64)	2m 21s
binaries (linux/s390x)	2m 1s
binaries (linux/ppc64le)	2m 15s
binaries (linux/riscv64)	2m 3s
binaries (windows/amd64)	1m 48s
binaries (windows/arm64)	1m 48s
test / prepare	1m 58s
test / run (containerd, ./client ./cmd/buildctl ./worker/containerd ./solver ./frontend, integration)	2s
test / run (containerd-rootless, ./client ./cmd/buildctl ./worker/containerd ./solver ./frontend, integr...	2s
test / run (containerd-1.6, ./client ./cmd/buildctl ./worker/containerd ./solver ./frontend, integration)	3s
test / run (containerd-snapshotter-stargz, ./client ./cmd/buildctl ./worker/containerd ./solver ./fronte...	1s
test / run (oci, ./client ./cmd/buildctl ./worker/containerd ./solver ./frontend, integration)	7s
test / run (oci-rootless, ./client ./cmd/buildctl ./worker/containerd ./solver ./frontend, integration)	1s
test / run (oci-rootless-slirp4netns-detachnetns, ./client ./cmd/buildctl ./worker/containerd ./solver ....	2s
test / run (oci-snapshotter-stargz, ./client ./cmd/buildctl ./worker/containerd ./solver ./frontend, int...	2s
test / run (./..., 1, integration gateway)	7s
test / run (./client, containerd, nydus, integration)	2s
test / run (./client, oci, nydus, integration)	3s
test / run (./..., nydus, 1, integration)	3s
image	1s
release	1s
	21m 46s

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