Bump bower from 1.7.7 to 1.8.8 (#1683)

Bumps [bower](https://github.com/bower/bower) from 1.7.7 to 1.8.8.
- [Release notes](https://github.com/bower/bower/releases)
- [Changelog](https://github.com/bower/bower/blob/master/CHANGELOG.md)
- [Commits](https://github.com/bower/bower/compare/v1.7.7...v1.8.8)

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

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/package.json

@@ -19,7 +19,7 @@
   "author": "",
   "license": "Apache",
   "devDependencies": {
-    "bower": "1.7.7",
+    "bower": "1.8.8",
     "bower-shrinkwrap-resolver-ext": "0.1.0",
     "broccoli-asset-rev": "2.4.2",
     "broccoli-funnel": "1.0.1",

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/yarn.lock

@@ -541,9 +541,9 @@ bower-shrinkwrap-resolver-ext@0.1.0:
     semver "^5.3.0"
     string.prototype.endswith "^0.2.0"
 
-bower@1.7.7, bower@^1.3.12:
-  version "1.7.7"
-  resolved "https://registry.yarnpkg.com/bower/-/bower-1.7.7.tgz#2fd7ff3ebdcba5a8ffcd84c397c8fdfe9f825f92"
+bower@1.8.8, bower@^1.3.12:
+  version "1.8.8"
+  resolved "https://registry.yarnpkg.com/bower/-/bower-1.8.8.tgz#82544be34a33aeae7efb8bdf9905247b2cffa985"
 
 brace-expansion@^1.0.0:
   version "1.1.7"