update to use containerd seccomp package

Signed-off-by: Jess Frazelle <acidburn@microsoft.com>

vendor/github.com/opencontainers/image-spec/img/media-types.dot

@@ -1,12 +0,0 @@
-digraph G {
-  {
-    imageIndex [shape=note, label="Image Index\n<<optional>>\napplication/vnd.oci.image.index.v1+json"]
-    manifest [shape=note, label="Image manifest\napplication/vnd.oci.image.manifest.v1+json"]
-    config [shape=note, label="Image JSON\napplication/vnd.oci.image.config.v1+json"]
-    layer [shape=note, label="Layer tar archive\napplication/vnd.oci.image.layer.v1.tar\napplication/vnd.oci.image.layer.v1.tar+gzip\napplication/vnd.oci.image.layer.nondistributable.v1.tar\napplication/vnd.oci.image.layer.nondistributable.v1.tar+gzip"]
-  }
-
-  imageIndex -> manifest [label="1..*"]
-  manifest -> config [label="1..1"]
-  manifest -> layer [label="1..*"]
-}