⬆️ Update prettier version

Author: Michal Vlasák

package.json

@@ -62,7 +62,7 @@
     "jest": "^24.1.0",
     "jest-extended": "^0.11.2",
     "lint-staged": "^9.4.3",
-    "prettier": "^1.14.3",
+    "prettier": "^1.19.1",
     "supertest": "^4.0.2",
     "ts-jest": "^24.0.0",
     "tslint": "^5.11.0",