update metadata

LandmarksSAHead_quant8.mlpackage/Data/com.apple.CoreML/Metadata.json

@@ -4,7 +4,8 @@
   "MLModelCreatorDefinedKey" : {
     "com.github.apple.coremltools.source" : "tensorflow==2.8.0",
     "source" : "https:\/\/github.com\/cvdfoundation\/google-landmark",
-    "com.excelsis.crossprism.label_threshold" : "0.1",
+      "com.excelsis.crossprism.label_threshold" : "0.1",
+      "com.excelsis.crossprism.feature_extractor" : "efficientnetv2-21k-m-fv",
     "com.github.apple.coremltools.version" : "5.2.0",
     "com.excelsis.crossprism.logits_output" : "Identity",
     "com.excelsis.crossprism.type" : "head",
@@ -15,4 +16,4 @@
   },
   "MLModelAuthorKey" : "--",
   "MLModelLicenseKey" : "©2023 Excelsis Consulting"
-}
+}