build: bump prettier from 1.12.1 to 1.13.0 (#230)

Bumps [prettier](https://github.com/prettier/prettier) from 1.12.1 to 1.13.0.
- [Release notes](https://github.com/prettier/prettier/releases)
- [Changelog](https://github.com/prettier/prettier/blob/master/CHANGELOG.md)
- [Commits](https://github.com/prettier/prettier/compare/1.12.1...1.13.0)

Signed-off-by: dependabot[bot] <support@dependabot.com>

package.json

@@ -31,7 +31,7 @@
     "eslint-config-prettier": "^2.9.0",
     "eslint-plugin-prettier": "^2.6.0",
     "lint-staged": "^7.1.2",
-    "prettier": "^1.12.1",
+    "prettier": "^1.13.0",
     "prettier-check": "^2.0.0",
     "vuepress": "0.10.0",
     "yorkie": "^1.0.3"

yarn.lock

@@ -5830,9 +5830,9 @@ prettier-check@^2.0.0:
   dependencies:
     execa "^0.6.0"
 
-prettier@^1.11.1, prettier@^1.12.1:
-  version "1.12.1"
-  resolved "https://registry.npmjs.org/prettier/-/prettier-1.12.1.tgz#c1ad20e803e7749faf905a409d2367e06bbe7325"
+prettier@^1.11.1, prettier@^1.13.0:
+  version "1.13.0"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.13.0.tgz#054de8d5fb1a4405c845d16183f58a2c301f6f16"
 
 pretty-bytes@^4.0.2:
   version "4.0.2"