Update dependency prettier to v1.15.3 (#7125)

package.json

@@ -336,7 +336,7 @@
     "piping": "^1.0.0-rc.4",
     "po2json": "^0.4.5",
     "postcss-loader": "^3.0.0",
-    "prettier": "1.15.2",
+    "prettier": "1.15.3",
     "pretty-quick": "1.8.0",
     "react-hot-loader": "^4.3.3",
     "react-storybook-addon-chapters": "^2.1.9",

yarn.lock

@@ -12228,10 +12228,10 @@ preserve@^0.2.0:
   resolved "https://registry.yarnpkg.com/preserve/-/preserve-0.2.0.tgz#815ed1f6ebc65926f865b310c0713bcb3315ce4b"
   integrity sha1-gV7R9uvGWSb4ZbMQwHE7yzMVzks=
 
-prettier@1.15.2:
-  version "1.15.2"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.15.2.tgz#d31abe22afa4351efa14c7f8b94b58bb7452205e"
-  integrity sha512-YgPLFFA0CdKL4Eg2IHtUSjzj/BWgszDHiNQAe0VAIBse34148whfdzLagRL+QiKS+YfK5ftB6X4v/MBw8yCoug==
+prettier@1.15.3:
+  version "1.15.3"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.15.3.tgz#1feaac5bdd181237b54dbe65d874e02a1472786a"
+  integrity sha512-gAU9AGAPMaKb3NNSUUuhhFAS7SCO4ALTN4nRIn6PJ075Qd28Yn2Ig2ahEJWdJwJmlEBTUfC7mMUSFy8MwsOCfg==
 
 pretty-error@^2.0.2, pretty-error@^2.1.1:
   version "2.1.1"