Update dependency prettier to v2 (#620)

Co-authored-by: Renovate Bot <[email protected]>

Author: renovate[bot]

package.json

@@ -82,7 +82,7 @@
     "less-loader": "5.0.0",
     "lint-staged": "10.2.11",
     "mini-css-extract-plugin": "0.9.0",
-    "prettier": "1.19.1",
+    "prettier": "2.2.1",
     "react-test-renderer": "16.13.1",
     "style-loader": "1.2.0",
     "ts-jest": "25.5.1",

yarn.lock

@@ -11167,7 +11167,12 @@ prettier-linter-helpers@^1.0.0:
   dependencies:
     fast-diff "^1.1.2"
 
-[email protected], prettier@^1.16.4:
+[email protected]:
+  version "2.2.1"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-2.2.1.tgz#795a1a78dd52f073da0cd42b21f9c91381923ff5"
+  integrity sha512-PqyhM2yCjg/oKkFPtTGUojv7gnZAoG80ttl45O6x2Ug/rMJw4wcc9k6aaf2hibP7BGVCCM33gZoGjyvt9mm16Q==
+
+prettier@^1.16.4:
   version "1.19.1"
   resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.19.1.tgz#f7d7f5ff8a9cd872a7be4ca142095956a60797cb"
   integrity sha512-s7PoyDv/II1ObgQunCbB9PdLmUcBZcnWOcxDh7O0N/UwDEsHyqkW+Qh28jW+mVuCdx7gLB0BotYI1Y6uI9iyew==