Update dependency prettier to v1.19.0

Author: renovate-bot

package.json

@@ -16,7 +16,7 @@
     "pwa-helpers": "0.9.1"
   },
   "devDependencies": {
-    "prettier": "1.16.4",
+    "prettier": "1.19.0",
     "rollup": "1.20.3",
     "rollup-plugin-node-resolve": "4.0.1"
   }

yarn.lock

@@ -57,10 +57,10 @@ path-to-regexp@2.4.0:
   resolved "https://registry.yarnpkg.com/path-to-regexp/-/path-to-regexp-2.4.0.tgz#35ce7f333d5616f1c1e1bfe266c3aba2e5b2e704"
   integrity sha512-G6zHoVqC6GGTQkZwF4lkuEyMbVOjoBKAEybQUypI1WTkqinCOrq2x6U2+phkJ1XsEMTy4LjtwPI7HW+NVrRR2w==
 
-prettier@1.16.4:
-  version "1.16.4"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.16.4.tgz#73e37e73e018ad2db9c76742e2647e21790c9717"
-  integrity sha512-ZzWuos7TI5CKUeQAtFd6Zhm2s6EpAD/ZLApIhsF9pRvRtM1RFo61dM/4MSRUA0SuLugA/zgrZD8m0BaY46Og7g==
+prettier@1.19.0:
+  version "1.19.0"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.19.0.tgz#3bec4489d5eebcd52b95ddd2c22467b5c852fde1"
+  integrity sha512-GlAIjk6DjkNT6u/Bw5QCWrbzh9YlLKwwmJT//1YiCR3WDpZDnyss64aXHQZgF8VKeGlWnX6+tGsKSVxsZT/gtA==
 
 pwa-helpers@0.9.1:
   version "0.9.1"