more dep updating

Author: Contra

package-lock.json

@@ -17,7 +17,7 @@
  "vinyl-sourcemaps-apply": "^0.2.1"
  },
  "devDependencies": {
- "gulp-sourcemaps": "^2.2.0",
+ "gulp-sourcemaps": "^2.6.2",
  "mocha": "^3.0.0",
  "should": "^11.0.0"
  },