Bump webpack-cli from 5.1.4 to 6.0.1

Bumps [webpack-cli](https://github.com/webpack/webpack-cli) from 5.1.4 to 6.0.1.
- [Release notes](https://github.com/webpack/webpack-cli/releases)
- [Changelog](https://github.com/webpack/webpack-cli/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack/webpack-cli/compare/[email protected]@6.0.1)

---
updated-dependencies:
- dependency-name: webpack-cli
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

package-lock.json

@@ -470,7 +470,7 @@
     "vscode-extension-tester": "^8.10.0",
     "vscode-test": "^1.2.3",
     "webpack": "^5.97.1",
-    "webpack-cli": "^5.1.4"
+    "webpack-cli": "^6.0.1"
   },
   "dependencies": {
     "@redhat-developer/vscode-extension-proposals": "^0.0.23",