chore(package): update lockfile yarn.lock

Author: greenkeeper[bot]

yarn.lock

@@ -224,10 +224,10 @@
   resolved "https://registry.yarnpkg.com/@types/prop-types/-/prop-types-15.5.6.tgz#9c03d3fed70a8d517c191b7734da2879b50ca26c"
   integrity sha512-ZBFR7TROLVzCkswA3Fmqq+IIJt62/T7aY/Dmz+QkU7CaW2QFqAitCE8Ups7IzmGhcN1YWMBT4Qcoc07jU9hOJQ==
 
-"@types/react-dom@^16.8.2":
-  version "16.8.2"
-  resolved "https://registry.yarnpkg.com/@types/react-dom/-/react-dom-16.8.2.tgz#9bd7d33f908b243ff0692846ef36c81d4941ad12"
-  integrity sha512-MX7n1wq3G/De15RGAAqnmidzhr2Y9O/ClxPxyqaNg96pGyeXUYPSvujgzEVpLo9oIP4Wn1UETl+rxTN02KEpBw==
+"@types/react-dom@^16.8.4":
+  version "16.8.4"
+  resolved "https://registry.yarnpkg.com/@types/react-dom/-/react-dom-16.8.4.tgz#7fb7ba368857c7aa0f4e4511c4710ca2c5a12a88"
+  integrity sha512-eIRpEW73DCzPIMaNBDP5pPIpK1KXyZwNgfxiVagb5iGiz6da+9A5hslSX6GAQKdO7SayVCS/Fr2kjqprgAvkfA==
   dependencies:
     "@types/react" "*"