build(deps-dev): bump html-webpack-plugin in /frontend (#750)

Bumps [html-webpack-plugin](https://github.com/jantimon/html-webpack-plugin) from 4.5.0 to 4.5.1.
- [Release notes](https://github.com/jantimon/html-webpack-plugin/releases)
- [Changelog](https://github.com/jantimon/html-webpack-plugin/blob/master/CHANGELOG.md)
- [Commits](jantimon/html-webpack-plugin@v4.5.0...v4.5.1)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

frontend/package-lock.json

@@ -38,7 +38,7 @@
     "eslint-plugin-no-unsanitized": "^3.0.2",
     "eslint-plugin-prettier": "^3.1.0",
     "file-loader": "^6.0.0",
-    "html-webpack-plugin": "^4.0.1",
+    "html-webpack-plugin": "^4.5.1",
     "mini-css-extract-plugin": "^1.3.4",
     "node-sass": "^5.0.0",
     "prettier": "1.19.1",