Merge pull request #244 from syuilo/greenkeeper/gulp-mocha-4.1.0

Update gulp-mocha to the latest version 🚀

package.json

@@ -92,7 +92,7 @@
     "gulp": "3.9.1",
     "gulp-cssnano": "2.1.2",
     "gulp-imagemin": "3.1.1",
-    "gulp-mocha": "4.0.1",
+    "gulp-mocha": "4.1.0",
     "gulp-pug": "3.2.0",
     "gulp-rename": "1.2.2",
     "gulp-tslint": "7.1.0",