Update Yarn to v1.21.1 (#247)

renovate-bot · kristoferbaxter · commit 859a8dd59eb9 · 2019-12-12T11:42:10.000-08:00
diff --git a/package.json b/package.json
@@ -78,6 +78,6 @@
   },
   "volta": {
     "node": "12.13.1",
-    "yarn": "1.21.0"
+    "yarn": "1.21.1"
   }
 }
