Update dependency tslint to v5.12.1

Author: renovate-bot

package.json

@@ -27,7 +27,7 @@
     "bot-tester": "3.4.2",
     "ts-jest": "22.0.2",
     "ts-node": "4.1.0",
-    "tslint": "5.9.1",
+    "tslint": "5.12.1",
     "typescript": "2.7.2"
   }
 }

yarn.lock

@@ -4161,9 +4161,13 @@ tslib@^1.8.0:
   version "1.8.1"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.8.1.tgz#6946af2d1d651a7b1863b531d6e5afa41aa44eac"
 
-[email protected]:
-  version "5.9.1"
-  resolved "https://registry.yarnpkg.com/tslint/-/tslint-5.9.1.tgz#1255f87a3ff57eb0b0e1f0e610a8b4748046c9ae"
+tslib@^1.8.1:
+  version "1.9.3"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.9.3.tgz#d7e4dd79245d85428c4d7e4822a79917954ca286"
+
+[email protected]:
+  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"
@@ -4176,13 +4180,13 @@ [email protected]:
     resolve "^1.3.2"
     semver "^5.3.0"
     tslib "^1.8.0"
-    tsutils "^2.12.1"
+    tsutils "^2.27.2"
 
-tsutils@^2.12.1:
-  version "2.14.0"
-  resolved "https://registry.yarnpkg.com/tsutils/-/tsutils-2.14.0.tgz#bc5291622aa2448c1baffc544bcc14ecfa528fb7"
+tsutils@^2.27.2:
+  version "2.29.0"
+  resolved "https://registry.yarnpkg.com/tsutils/-/tsutils-2.29.0.tgz#32b488501467acbedd4b85498673a0812aca0b99"
   dependencies:
-    tslib "^1.8.0"
+    tslib "^1.8.1"
 
 tunnel-agent@^0.6.0:
   version "0.6.0"