Bump webpack-bundle-analyzer from 2.13.1 to 3.6.0 in /src/ui/jttools

Bumps [webpack-bundle-analyzer](https://github.com/webpack-contrib/webpack-bundle-analyzer) from 2.13.1 to 3.6.0.
- [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](https://github.com/webpack-contrib/webpack-bundle-analyzer/compare/v2.13.1...v3.6.0)

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

src/ui/jttools/package.json

@@ -59,7 +59,7 @@
     "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": "^3.6.0",
     "webpack-dev-server": "^2.9.1",
     "webpack-merge": "^4.1.0"
   },