vendor: cadvisor v0.39.0

Main upgrades:
- github.com/opencontainers/runc v1.0.0-rc93
- github.com/containerd/containerd v1.4.4
- github.com/docker/docker v20.10.2
- github.com/mrunalp/fileutils v0.5.0
- github.com/opencontainers/selinux v1.8.0
- github.com/cilium/ebpf v0.2.0

vendor/github.com/opencontainers/runc/libcontainer/cgroups/fs/name.go

@@ -19,7 +19,7 @@ func (s *NameGroup) Name() string {
 func (s *NameGroup) Apply(path string, d *cgroupData) error {
 	if s.Join {
 		// ignore errors if the named cgroup does not exist
-		join(path, d.pid)
+		_ = join(path, d.pid)
 	}
 	return nil
 }