chore(package): update prettier to version 2.0.3

Closes #64

Author: greenkeeper[bot]

package.json

@@ -165,7 +165,7 @@
     "less-plugin-autoprefix": "2.0.0",
     "lint-staged": "^9.4.2",
     "ora": "^4.0.2",
-    "prettier": "^1.18.2",
+    "prettier": "^2.0.3",
     "ui5-cache-buster": "^0.2.2",
     "ui5-lib-util": "^0.2.0",
     "vinyl-buffer": "^1.0.1",