Fix "netchecker-server" ClusterRole (#4730)

* Add sha256 hashes for calicoctl v3.6.1

Hashes are added to calicoctl_binary_checksums for both adm and arm platforms.

* Add rules for "network-checker.ext" resource to "netchecker-server" ClusterRole

So that it could access the resource after it is created.

Corresponding issues:
https://github.com/Mirantis/k8s-netchecker-server/issues/125
https://github.com/kubernetes-sigs/kubespray/issues/3281