Bump bower from 1.8.4 to 1.8.8

Bumps [bower](https://github.com/bower/bower) from 1.8.4 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@v1.8.4...v1.8.8)

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

package.json

@@ -20,7 +20,7 @@
   },
   "devDependencies": {
     "standard": "latest",
-    "bower": "^1.8.4"
+    "bower": "^1.8.8"
   },
   "description": "Extensão para notificar qual música/vídeo está tocando no Deezer, YouTube, Spotify, Google Play Music ou YouTube Music.",
   "main": "index.js",