Bump @babel/polyfill from 7.7.0 to 7.8.3

Bumps [@babel/polyfill](https://github.com/babel/babel) from 7.7.0 to 7.8.3.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/master/CHANGELOG.md)
- [Commits](babel/babel@v7.7.0...v7.8.3)

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

package.json

@@ -16,7 +16,7 @@
     "vue-router": "^3.1.5"
   },
   "devDependencies": {
-    "@babel/polyfill": "^7.7.0",
+    "@babel/polyfill": "^7.8.3",
     "@vue/cli-plugin-babel": "^4.1.1",
     "@vue/cli-plugin-eslint": "^4.1.1",
     "@vue/cli-plugin-router": "^4.0.5",