Update dependency rollup to v1.16.6 (#552)

Author: renovate[bot]

package.json

@@ -76,7 +76,7 @@
     "react": "16.8.6",
     "react-dom": "16.8.6",
     "react-test-renderer": "16.8.6",
-    "rollup": "1.16.4",
+    "rollup": "1.16.6",
     "rollup-plugin-babel": "4.3.3",
     "rollup-plugin-commonjs": "10.0.1",
     "rollup-plugin-node-globals": "1.4.0",

yarn.lock

@@ -9256,10 +9256,10 @@ rollup-watch@4.3.1:
     require-relative "0.8.7"
     rollup-pluginutils "^2.0.1"
 
-rollup@1.16.4:
-  version "1.16.4"
-  resolved "https://registry.yarnpkg.com/rollup/-/rollup-1.16.4.tgz#0a13bace39cf6c1784781e383e605d1b6274c2f4"
-  integrity sha512-Bht8QXoo2dJc8lUGyEMfnfKCV7hkf1oLzN6L8YdDE2toaaoCe5DxoqYjTyKswWQyiZseViZw9quEdDRz0YXifw==
+rollup@1.16.6:
+  version "1.16.6"
+  resolved "https://registry.yarnpkg.com/rollup/-/rollup-1.16.6.tgz#0d979e3edd14a27e5436a145c7f1fcef35e0083b"
+  integrity sha512-oM3iKkzPCq9Da95wCnNfS8YlNZjgCD5c/TceKnJIthI9FOeJqnO3PUr/C5Suv9Kjzh0iphKL02PLeja3A5AMIA==
   dependencies:
     "@types/estree" "0.0.39"
     "@types/node" "^12.0.10"