chore: update dependency prettier to v2

Author: renovate-bot

package.json

@@ -49,7 +49,7 @@
     "events": "3.1.0",
     "husky": "1.3.1",
     "nyc": "13.3.0",
-    "prettier": "1.19.1",
+    "prettier": "2.0.3",
     "standard-version": "4.4.0",
     "tap-spec": "5.0.0",
     "tape": "4.13.2",

yarn.lock

@@ -4624,9 +4624,9 @@ preserve@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/preserve/-/preserve-0.2.0.tgz#815ed1f6ebc65926f865b310c0713bcb3315ce4b"
 
-prettier@1.19.1:
-  version "1.19.1"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.19.1.tgz#f7d7f5ff8a9cd872a7be4ca142095956a60797cb"
+prettier@2.0.3:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-2.0.3.tgz#9a06f0e94a51420e78b6925568b5bec72afe41ea"
 
 pretty-ms@^2.1.0:
   version "2.1.0"