build(deps): bump loader-utils and html-webpack-plugin in /demo/vue-cli2

Bumps [loader-utils](https://github.com/webpack/loader-utils) to 1.4.2 and updates ancestor dependency [html-webpack-plugin](https://github.com/jantimon/html-webpack-plugin). These dependencies need to be updated together.


Updates `loader-utils` from 0.2.17 to 1.4.2
- [Release notes](https://github.com/webpack/loader-utils/releases)
- [Changelog](https://github.com/webpack/loader-utils/blob/v1.4.2/CHANGELOG.md)
- [Commits](webpack/loader-utils@v0.2.17...v1.4.2)

Updates `html-webpack-plugin` from 2.30.1 to 5.5.0
- [Release notes](https://github.com/jantimon/html-webpack-plugin/releases)
- [Changelog](https://github.com/jantimon/html-webpack-plugin/blob/main/CHANGELOG.md)
- [Commits](jantimon/html-webpack-plugin@v2.30.1...v5.5.0)

---
updated-dependencies:
- dependency-name: loader-utils
  dependency-type: indirect
- dependency-name: html-webpack-plugin
  dependency-type: direct:development
...

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

Author: dependabot[bot]

demo/vue-cli2/package-lock.json

@@ -32,7 +32,7 @@
     "extract-text-webpack-plugin": "^3.0.0",
     "file-loader": "^1.1.4",
     "friendly-errors-webpack-plugin": "^1.6.1",
-    "html-webpack-plugin": "^2.30.1",
+    "html-webpack-plugin": "^5.5.0",
     "node-notifier": "^5.1.2",
     "optimize-css-assets-webpack-plugin": "^3.2.0",
     "ora": "^1.2.0",