Update dependency prettier to v1.19.0

Author: renovate-bot

Diff for: package.json

@@ -25,7 +25,7 @@
     "dev-null-stream": "0.0.1",
     "jest": "24.9.0",
     "markdown-toc": "1.2.0",
-    "prettier": "1.18.2"
+    "prettier": "1.19.0"
   },
   "scripts": {
     "toc": "yarn run markdown-toc -i doc/recipes.md",

Diff for: yarn.lock

@@ -2956,9 +2956,9 @@ prelude-ls@~1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.1.2.tgz#21932a549f5e52ffd9a827f570e04be62a97da54"
 
-prettier@1.18.2:
-  version "1.18.2"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.18.2.tgz#6823e7c5900017b4bd3acf46fe9ac4b4d7bda9ea"
+prettier@1.19.0:
+  version "1.19.0"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.19.0.tgz#3bec4489d5eebcd52b95ddd2c22467b5c852fde1"
 
 pretty-format@^24.9.0:
   version "24.9.0"