update CNI plugins (1.6.2)

[djdongjin]

https://github.com/containernetworking/plugins/releases/tag/v1.6.2

(administrative note: release v1.6.1 was somehow double-created in GitHub; v1.6.2 is identical but fixes the duplication.)

Now 1.6.1 only has s390v artifacts and fails our CI:

https://github.com/containernetworking/plugins/releases/tag/v1.6.1

https://github.com/containerd/nerdctl/actions/runs/12641602765/job/35224329459?pr=3796

[AkihiroSuda]

?

[djdongjin]

ah probably editor auto format 🤦, let me change this back (and remove the 1.6.1 as well in the other comment), sry!

[djdongjin]

@AkihiroSuda actually this file has mixed 2-space and 4-space indent. After this all indents are 2-space. Maybe we should keep this format change?

4 spaces:

nerdctl/Dockerfile

Lines 65 to 71 in 1220ce7

	RUN xx-apt-get update -qq && xx-apt-get install -qq --no-install-recommends \
	binutils \
	gcc \
	libc6-dev \
	libbtrfs-dev \
	libseccomp-dev \
	pkg-config

2 spaces:

nerdctl/Dockerfile

Lines 79 to 83 in 1220ce7

	RUN git checkout ${CONTAINERD_VERSION} && \
	mkdir -p /out /out/$TARGETARCH && \
	cp -a containerd.service /out
	RUN GO=xx-go make STATIC=1 && \
	cp -a bin/containerd bin/containerd-shim-runc-v2 bin/ctr /out/$TARGETARCH

[AkihiroSuda]

Either is fine to me.

Probably we should have some linter to enforce either of one.

[djdongjin]

Sounds good, I will keep this format change for now then for consistency. Let me see if there are some linter that can run in CI.

[AkihiroSuda]

cni-plugins-v1.6.1 can be removed