vendor: bump runc to rc94

One notable change is cgroup manager's Set now accept Resources rather
than Cgroup (see https://github.com/opencontainers/runc/pull/2906).
Modify the code accordingly.

Also update runc dependencies (as hinted by hack/lint-depdendencies.sh):

	github.com/cilium/ebpf v0.5.0
	github.com/containerd/console v1.0.2
	github.com/coreos/go-systemd/v22 v22.3.1
	github.com/godbus/dbus/v5 v5.0.4
	github.com/moby/sys/mountinfo v0.4.1
	golang.org/x/sys v0.0.0-20210426230700-d19ff857e887
	github.com/google/go-cmp v0.5.4
	github.com/kr/pretty v0.2.1
	github.com/opencontainers/runtime-spec v1.0.3-0.20210326190908-1c3f411f0417

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>

vendor/github.com/containerd/console/console_unix.go

@@ -19,8 +19,6 @@
 package console
 
 import (
-	"os"
-
 	"golang.org/x/sys/unix"
 )
 
@@ -28,7 +26,7 @@ import (
 // The master is returned as the first console and a string
 // with the path to the pty slave is returned as the second
 func NewPty() (Console, string, error) {
-	f, err := os.OpenFile("/dev/ptmx", unix.O_RDWR|unix.O_NOCTTY|unix.O_CLOEXEC, 0)
+	f, err := openpt()
 	if err != nil {
 		return nil, "", err
 	}