Bump Prettier version

package.json

@@ -96,7 +96,7 @@
     "jest-snapshot-serializer-raw": "1.1.0",
     "jest-watch-typeahead": "0.1.0",
     "mkdirp": "0.5.1",
-    "prettier": "1.17.0",
+    "prettier": "1.17.1",
     "prettylint": "1.0.0",
     "rimraf": "2.6.2",
     "rollup": "0.47.6",

yarn.lock

@@ -4643,9 +4643,9 @@ preserve@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/preserve/-/preserve-0.2.0.tgz#815ed1f6ebc65926f865b310c0713bcb3315ce4b"
 
-prettier@1.17.0:
-  version "1.17.0"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.17.0.tgz#53b303676eed22cc14a9f0cec09b477b3026c008"
+prettier@1.17.1:
+  version "1.17.1"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.17.1.tgz#ed64b4e93e370cb8a25b9ef7fef3e4fd1c0995db"
 
 pretty-format@^23.0.1, pretty-format@^23.2.0:
   version "23.2.0"