chore(deps): update dependency prettier to v1.18.2 (#421)

Author: renovate[bot]

package-lock.json

@@ -58,7 +58,7 @@
     "jest": "24.8.0",
     "jest-junit": "6.4.0",
     "lint-staged": "8.2.0",
-    "prettier": "1.18.1",
+    "prettier": "1.18.2",
     "standard-version": "6.0.1",
     "supertest": "4.0.2",
     "webpack": "4.33.0"