deps: update dependency prettier to v2.3.1 (#671)

Author: renovate[bot]

package-lock.json

@@ -65,7 +65,7 @@
     "ncp": "2.0.0",
     "npm-run-all": "4.1.5",
     "postcss": "8.3.0",
-    "prettier": "2.3.0",
+    "prettier": "2.3.1",
     "rimraf": "3.0.2",
     "rollup": "2.50.6",
     "sass": "1.34.1",