Update dependency tslint to v6.1.2 (#423)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

package-lock.json

@@ -14,7 +14,7 @@
         "commander": "5.1.0",
         "eslint-config-prettier": "6.11.0",
         "strip-json-comments": "3.1.0",
-        "tslint": "6.1.1",
+        "tslint": "6.1.2",
         "typescript": "3.8.3"
     },
     "devDependencies": {