Bump bower from 1.7.9 to 1.8.8

Bumps [bower](https://github.com/bower/bower) from 1.7.9 to 1.8.8.
- [Release notes](https://github.com/bower/bower/releases)
- [Changelog](https://github.com/bower/bower/blob/master/CHANGELOG.md)
- [Commits](bower/bower@v1.7.9...v1.8.8)

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

package.json

@@ -8,7 +8,7 @@
     "src/main/webapp/bower_components"
   ],
   "devDependencies": {
-    "bower": "1.7.9",
+    "bower": "1.8.8",
     "browser-sync": "2.12.10",
     "del": "2.2.0",
     "eslint-config-angular": "0.5.0",