Update addon version

Author: keianhzo

package-lock.json

@@ -102,7 +102,7 @@
     "history": "^4.7.2",
     "hls.js": "^0.14.6",
     "html2canvas": "^1.0.0-rc.7",
-    "hubs-duck-addon": "github:MozillaReality/hubs-duck-addon#webpack",
+    "hubs-duck-addon": "github:MozillaReality/hubs-duck-addon#8fe76cf21ace54e0c7dc14bec292d598bbc6ae79",
     "js-cookie": "^2.2.0",
     "jsonschema": "^1.2.2",
     "jwt-decode": "^2.2.0",