Update dependency prettier to v2.3.1

Author: renovate-bot

package-lock.json

@@ -67,7 +67,7 @@
     "@types/supertest": "2.0.11",
     "axios": "0.21.1",
     "jest": "26.6.3",
-    "prettier": "2.0.5",
+    "prettier": "2.3.1",
     "rimraf": "3.0.2",
     "supertest": "6.1.3",
     "ts-jest": "26.5.6",