chore(deps): update dependency tslint to v5.20.1 (#121)

Author: renovate[bot]

package-lock.json

@@ -37,7 +37,7 @@
     "supertest": "4.0.2",
     "ts-jest": "24.1.0",
     "tsc-watch": "4.0.0",
-    "tslint": "5.20.0"
+    "tslint": "5.20.1"
   },
   "peerDependencies": {
     "@nestjs/common": "^6.0.0",