chore(deps): update yarn to v1.21.0

renovate-bot · renovate[bot] · commit cb6b1df86666 · 2019-12-02T09:44:44.000Z
diff --git a/package.json b/package.json
@@ -170,6 +170,6 @@
   },
   "volta": {
     "node": "10.17.0",
-    "yarn": "1.19.2"
+    "yarn": "1.21.0"
   }
 }
