Bump prettier from 1.12.1 to 1.16.4

Bumps [prettier](https://github.com/prettier/prettier) from 1.12.1 to 1.16.4.
- [Release notes](https://github.com/prettier/prettier/releases)
- [Changelog](https://github.com/prettier/prettier/blob/master/CHANGELOG.md)
- [Commits](prettier/prettier@1.12.1...1.16.4)

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

Author: dependabot-support

yarn.lock

@@ -4059,9 +4059,9 @@ preserve@^0.2.0:
   integrity sha1-gV7R9uvGWSb4ZbMQwHE7yzMVzks=
 
 prettier@^1.7.4:
-  version "1.12.1"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.12.1.tgz#c1ad20e803e7749faf905a409d2367e06bbe7325"
-  integrity sha1-wa0g6APndJ+vkFpAnSNn4Gu+cyU=
+  version "1.16.4"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.16.4.tgz#73e37e73e018ad2db9c76742e2647e21790c9717"
+  integrity sha512-ZzWuos7TI5CKUeQAtFd6Zhm2s6EpAD/ZLApIhsF9pRvRtM1RFo61dM/4MSRUA0SuLugA/zgrZD8m0BaY46Og7g==
 
 pretty-format@^23.6.0:
   version "23.6.0"