vendor: github.com/opencontainers/image-spec v1.0.2

- Bring mediaType out of reserved status
- specs-go: adding mediaType to the index and manifest structures

full diff: opencontainers/image-spec@v1.0.1...v1.0.2

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit cef0a7c)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

integration/plugin/common/plugin_test.go

@@ -276,11 +276,7 @@ func TestPluginBackCompatMediaTypes(t *testing.T) {
 	assert.NilError(t, err)
 	defer rdr.Close()
 
-	type manifest struct {
-		MediaType string
-		v1.Manifest
-	}
-	var m manifest
+	var m v1.Manifest
 	assert.NilError(t, json.NewDecoder(rdr).Decode(&m))
 	assert.Check(t, cmp.Equal(m.MediaType, images.MediaTypeDockerSchema2Manifest))
 	assert.Check(t, cmp.Len(m.Layers, 1))

vendor.conf

@@ -92,7 +92,7 @@ google.golang.org/grpc                              f495f5b15ae7ccda3b38c53a1bfc
 # packages but should be newer or equal.
 github.com/opencontainers/runc                      ff819c7e9184c13b7c2607fe6c30ae19403a7aff # v1.0.0-rc92
 github.com/opencontainers/runtime-spec              4d89ac9fbff6c455f46a5bb59c6b1bb7184a5e43 # v1.0.3-0.20200728170252-4d89ac9fbff6
-github.com/opencontainers/image-spec                d60099175f88c47cd379c4738d158884749ed235 # v1.0.1
+github.com/opencontainers/image-spec                67d2d5658fe0476ab9bf414cec164077ebff3920 # v1.0.2
 github.com/cyphar/filepath-securejoin               a261ee33d7a517f054effbf451841abaafe3e0fd # v0.2.2
 
 # go-systemd v17 is required by github.com/coreos/pkg/capnslog/journald_formatter.go