chore(deps): bump ejs and webpack-bundle-analyzer

Removes [ejs](https://github.com/mde/ejs). It's no longer used after updating ancestor dependency [webpack-bundle-analyzer](https://github.com/webpack-contrib/webpack-bundle-analyzer). These dependencies need to be updated together.


Removes `ejs`

Updates `webpack-bundle-analyzer` from 3.6.0 to 4.6.1
- [Release notes](https://github.com/webpack-contrib/webpack-bundle-analyzer/releases)
- [Changelog](https://github.com/webpack-contrib/webpack-bundle-analyzer/blob/master/CHANGELOG.md)
- [Commits](webpack/webpack-bundle-analyzer@v3.6.0...v4.6.1)

---
updated-dependencies:
- dependency-name: ejs
  dependency-type: indirect
- dependency-name: webpack-bundle-analyzer
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -79,7 +79,7 @@
     "vue-style-loader": "4.1.2",
     "vue-template-compiler": "2.6.11",
     "webpack": "4.41.2",
-    "webpack-bundle-analyzer": "3.6.0",
+    "webpack-bundle-analyzer": "4.6.1",
     "webpack-cli": "3.3.10",
     "webpack-dev-middleware": "3.7.2",
     "webpack-hot-middleware": "2.25.0",