Update dependency prettier to v1.18.1

Author: renovate-bot

package.json

@@ -22,7 +22,7 @@
     "eslint-plugin-import": "2.17.2",
     "eslint-plugin-prettier": "3.0.1",
     "htmllint": "0.8.0",
-    "prettier": "1.17.0",
+    "prettier": "1.18.1",
     "stylelint": "10.0.1",
     "stylelint-config-prettier": "5.2.0",
     "stylelint-config-standard": "18.3.0",

yarn.lock

@@ -2401,10 +2401,10 @@ prettier-linter-helpers@^1.0.0:
   dependencies:
     fast-diff "^1.1.2"
 
-prettier@1.17.0:
-  version "1.17.0"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.17.0.tgz#53b303676eed22cc14a9f0cec09b477b3026c008"
-  integrity sha512-sXe5lSt2WQlCbydGETgfm1YBShgOX4HxQkFPvbxkcwgDvGDeqVau8h+12+lmSVlP3rHPz0oavfddSZg/q+Szjw==
+prettier@1.18.1:
+  version "1.18.1"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.18.1.tgz#2c79bdc97cbd457fc56e2f37c91cf076d69a8e07"
+  integrity sha512-cO2Lm9UuFJHhNgHSChbFddQEzNPP+sA6fX1tGmC0VNqTc2X+7EH0gpGWdEX0HfCe5+NVyOyyyWUpLKsb8LU5vg==
 
 progress@^2.0.0:
   version "2.0.3"