build(deps-dev): bump terser-webpack-plugin from 1.4.1 to 2.3.5 (#480)

Bumps [terser-webpack-plugin](https://github.com/webpack-contrib/terser-webpack-plugin) from 1.4.1 to 2.3.5.
- [Release notes](https://github.com/webpack-contrib/terser-webpack-plugin/releases)
- [Changelog](https://github.com/webpack-contrib/terser-webpack-plugin/blob/master/CHANGELOG.md)
- [Commits](webpack/terser-webpack-plugin@v1.4.1...v2.3.5)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Author: dependabot-preview[bot]

packages/cubejs-playground/package.json

@@ -77,6 +77,6 @@
     "fs-extra": "^8.1.0",
     "react-app-rewired": "^2.1.0",
     "recursive-readdir": "^2.2.2",
-    "terser-webpack-plugin": "^1.2.3"
+    "terser-webpack-plugin": "^2.3.5"
   }
 }