chore(deps): update dependency tslint to v5.12.1

Author: renovate-bot

package.json

@@ -20,7 +20,7 @@
     "moment": "2.22.0",
     "parse": "1.11.0",
     "ts-jest": "21.2.4",
-    "tslint": "5.11.0",
+    "tslint": "5.12.1",
     "tslint-config-airbnb": "5.3.0",
     "typescript": "2.8.1"
   },

yarn.lock

@@ -3191,9 +3191,9 @@ tslint-microsoft-contrib@^5.0.0:
   dependencies:
     tsutils "^1.4.0"
 
-tslint@5.11.0:
-  version "5.11.0"
-  resolved "https://registry.yarnpkg.com/tslint/-/tslint-5.11.0.tgz#98f30c02eae3cde7006201e4c33cb08b48581eed"
+tslint@5.12.1:
+  version "5.12.1"
+  resolved "https://registry.yarnpkg.com/tslint/-/tslint-5.12.1.tgz#8cec9d454cf8a1de9b0a26d7bdbad6de362e52c1"
   dependencies:
     babel-code-frame "^6.22.0"
     builtin-modules "^1.1.1"