TASK: Update dependency prettier to v2

Author: renovate-bot

package.json

@@ -70,7 +70,7 @@
     "flow-copy-source": "2.0.9",
     "flow-typed": "2.6.2",
     "jest": "24.9.0",
-    "prettier": "1.19.1",
+    "prettier": "2.3.1",
     "rimraf": "3.0.2",
     "semantic-release": "15.13.31"
   },

yarn.lock

@@ -6664,7 +6664,12 @@ prepend-http@^2.0.0:
   resolved "https://registry.yarnpkg.com/prepend-http/-/prepend-http-2.0.0.tgz#e92434bfa5ea8c19f41cdfd401d741a3c819d897"
   integrity sha1-6SQ0v6XqjBn0HN/UAddBo8gZ2Jc=
 
-prettier@1.19.1, prettier@^1.16.4, prettier@^1.18.2:
+prettier@2.3.1:
+  version "2.3.1"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-2.3.1.tgz#76903c3f8c4449bc9ac597acefa24dc5ad4cbea6"
+  integrity sha512-p+vNbgpLjif/+D+DwAZAbndtRrR0md0MwfmOVN9N+2RgyACMT+7tfaRnT+WDPkqnuVwleyuBIG2XBxKDme3hPA==
+
+prettier@^1.16.4, prettier@^1.18.2:
   version "1.19.1"
   resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.19.1.tgz#f7d7f5ff8a9cd872a7be4ca142095956a60797cb"
   integrity sha512-s7PoyDv/II1ObgQunCbB9PdLmUcBZcnWOcxDh7O0N/UwDEsHyqkW+Qh28jW+mVuCdx7gLB0BotYI1Y6uI9iyew==