Bump gulp-util from 3.0.7 to 3.0.8

Bumps [gulp-util](https://github.com/gulpjs/gulp-util) from 3.0.7 to 3.0.8.
- [Commits](gulpjs/gulp-util@v3.0.7...v3.0.8)

---
updated-dependencies:
- dependency-name: gulp-util
  dependency-version: 3.0.8
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package-lock.json

@@ -81,7 +81,7 @@
     "gulp-sourcemaps": "1.6.0",
     "gulp-svgstore": "6.0.0",
     "gulp-uglify": "1.5.4",
-    "gulp-util": "3.0.7",
+    "gulp-util": "3.0.8",
     "gulp-watch": "4.3.8",
     "imports-loader": "^0.6.5",
     "lolex": "1.5.0",