Update from c2pa-rs branch c2pa-v0.49.5

Author: crandmck

_data/Builder_schema.json

@@ -17,7 +17,7 @@
       "default": [
         {
           "name": "c2pa-rs",
-          "version": "0.46.0"
+          "version": "0.49.5"
         }
       ],
       "type": "array",
@@ -49,7 +49,7 @@
     },
     "instance_id": {
       "description": "Instance ID from `xmpMM:InstanceID` in XMP metadata.",
-      "default": "xmp:iid:242057fc-bf86-4b3b-ae62-e0845fd4b5a1",
+      "default": "xmp:iid:dde3986c-d7b2-4256-b5dd-acc8ed9aada3",
       "type": "string"
     },
     "label": {
@@ -386,6 +386,13 @@
             "null"
           ]
         },
+        "label": {
+          "description": "The ingredient's label as assigned in the manifest.",
+          "type": [
+            "string",
+            "null"
+          ]
+        },
         "manifest_data": {
           "description": "A [`ManifestStore`] from the source asset extracted as a binary C2PA blob.\n\n[`ManifestStore`]: crate::ManifestStore",
           "anyOf": [