build(deps-dev): bump terser-webpack-plugin in /frontend

Bumps [terser-webpack-plugin](https://github.com/webpack-contrib/terser-webpack-plugin) from 5.1.1 to 5.1.4.
- [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-contrib/terser-webpack-plugin@v5.1.1...v5.1.4)

---
updated-dependencies:
- dependency-name: terser-webpack-plugin
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

frontend/package-lock.json

@@ -44,7 +44,7 @@
     "prettier": "1.19.1",
     "sass-loader": "^11.0.1",
     "standard": "^16.0.1",
-    "terser-webpack-plugin": "^5.1.1",
+    "terser-webpack-plugin": "^5.1.4",
     "webpack": "^5.36.2",
     "webpack-cli": "^4.7.0",
     "webpack-dev-server": "^3.11.2",