Bump webpack-bundle-analyzer from 2.13.1 to 3.3.2 in /source-code

Bumps [webpack-bundle-analyzer](https://github.com/webpack-contrib/webpack-bundle-analyzer) from 2.13.1 to 3.3.2.
- [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-contrib/webpack-bundle-analyzer@v2.13.1...v3.3.2)

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

source-code/package.json

@@ -46,7 +46,7 @@
     "vue-style-loader": "^3.0.1",
     "vue-template-compiler": "^2.5.2",
     "webpack": "^3.6.0",
-    "webpack-bundle-analyzer": "^2.9.0",
+    "webpack-bundle-analyzer": "^3.3.2",
     "webpack-dev-server": "^2.9.1",
     "webpack-merge": "^4.1.0"
   },