bump stereoscope to include functional options (#823)

Signed-off-by: Alex Goodman <alex.goodman@anchore.com>

internal/formats/syftjson/decoder_test.go

@@ -21,6 +21,10 @@ func TestEncodeDecodeCycle(t *testing.T) {
 	assert.NoError(t, err)
 
 	for _, d := range deep.Equal(originalSBOM.Source, actualSBOM.Source) {
+		if strings.HasSuffix(d, "<nil slice> != []") {
+			// semantically the same
+			continue
+		}
 		t.Errorf("metadata difference: %+v", d)
 	}
 

internal/formats/syftjson/to_format_model.go

@@ -217,9 +217,17 @@ func toRelationshipModel(relationships []artifact.Relationship) []model.Relation
 func toSourceModel(src source.Metadata) (model.Source, error) {
 	switch src.Scheme {
 	case source.ImageScheme:
+		metadata := src.ImageMetadata
+		// ensure that empty collections are not shown as null
+		if metadata.RepoDigests == nil {
+			metadata.RepoDigests = []string{}
+		}
+		if metadata.Tags == nil {
+			metadata.Tags = []string{}
+		}
 		return model.Source{
 			Type:   "image",
-			Target: src.ImageMetadata,
+			Target: metadata,
 		}, nil
 	case source.DirectoryScheme:
 		return model.Source{

internal/formats/syftjson/to_format_model_test.go

@@ -63,6 +63,8 @@ func Test_toSourceModel(t *testing.T) {
 					ID:             "id...",
 					ManifestDigest: "digest...",
 					MediaType:      "type...",
+					RepoDigests:    []string{},
+					Tags:           []string{},
 				},
 			},
 		},