Update openvino-metadata.json

source/openvino-metadata.json

@@ -558,6 +558,14 @@
       "support_level": "default"
     }
   },
+  {
+    "name": "Concatenation",
+    "schema": {
+      "category": "Tensor",
+      "inputs": null,
+      "outputs": null
+    }
+  },
   {
     "name": "Split",
     "schema": {