Bump bower from 1.8.0 to 1.8.8

Bumps [bower](https://github.com/bower/bower) from 1.8.0 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@v1.8.0...v1.8.8)

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

package.json

@@ -13,7 +13,7 @@
   "author": "Jessamyn Smith",
   "homepage": "http://eggtimer.herokuapp.com/",
   "dependencies": {
-    "bower": "^1.6.5"
+    "bower": "^1.8.8"
   },
   "devDependencies": {
     "blanket": "^1.2.3",