Update vendored runc to v1.0.0.0-rc94

Note that this is the code in containerd that uses runc (as almost
a library). Please see the other commit for the update to runc binary
itself.

Signed-off-by: Davanum Srinivas <davanum@gmail.com>

vendor/github.com/cilium/ebpf/run-tests.sh

@@ -9,6 +9,7 @@ if [[ "${1:-}" = "--in-vm" ]]; then
   shift
 
   mount -t bpf bpf /sys/fs/bpf
+  mount -t tracefs tracefs /sys/kernel/debug/tracing
   export CGO_ENABLED=0
   export GOFLAGS=-mod=readonly
   export GOPATH=/run/go-path