Update dependency powerhooks to ^0.21.0

package.json

@@ -82,7 +82,7 @@
         "minimal-polyfills": "^2.2.2",
         "minimist": "^1.2.6",
         "path-browserify": "^1.0.1",
-        "powerhooks": "^0.20.32",
+        "powerhooks": "^0.21.0",
         "react-markdown": "^5.0.3",
         "rfc4648": "^1.5.2",
         "scripting-tools": "^0.19.13",

yarn.lock

@@ -1639,10 +1639,10 @@ please-upgrade-node@^3.2.0:
   dependencies:
     semver-compare "^1.0.0"
 
-powerhooks@^0.20.32:
-  version "0.20.32"
-  resolved "https://registry.yarnpkg.com/powerhooks/-/powerhooks-0.20.32.tgz#c9ddff1dcd7d7bb250e54ea284a6c65d9c228e09"
-  integrity sha512-lp0rW5sAl8xrenhtB5eZOCwMFcPTtm55pn5++jeEMT1KaO/Rvd7hjaai+PPpDdwIbi5TaF+Zf5XhVO6gvfmXZQ==
+powerhooks@^0.21.0:
+  version "0.21.0"
+  resolved "https://registry.yarnpkg.com/powerhooks/-/powerhooks-0.21.0.tgz#bafe67c2ce8c4c38cd26dec08de27fdf0d81da70"
+  integrity sha512-O9JG79YKv3yJ6Tkcx+eNWUC/rUKPCFUBkDIDbnoKM29P0+8VAx9pjp/C9eE2qnKNXr5azgnGtEoyLzGB/UKorQ==
   dependencies:
     evt "^2.4.13"
     memoizee "^0.4.15"