Update @babel/polyfill requirement from 7.2.5 to 7.4.0

Updates the requirements on [@babel/polyfill](https://github.com/babel/babel) to permit the latest version.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/master/CHANGELOG.md)
- [Commits](babel/babel@v7.2.5...v7.4.0)

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

Author: dependabot-support

package.json

@@ -23,7 +23,7 @@
   },
   "homepage": "https://github.com/nimjetushar/angularjs-react#readme",
   "dependencies": {
-    "@babel/polyfill": "7.2.5",
+    "@babel/polyfill": "7.4.0",
     "angular": "1.7.8",
     "angular-ui-router": "1.0.22",
     "bootstrap": "4.3.1",