fix: migration metadata schema (#3528)

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Author: fpaul-1A

packages/@o3r/extractors/schemas/migration.metadata.schema.json

@@ -94,7 +94,7 @@
     "AssetMigrationItem": {
       "type": "object",
       "required": [
-        "name"
+        "path"
       ],
       "properties": {
         "path": {
@@ -268,4 +268,4 @@
       }
     }
   }
-}
+}