⬆️ Bump webpack-cli in /shifter in the js-dependencies group

Bumps the js-dependencies group in /shifter with 1 update: [webpack-cli](https://github.com/webpack/webpack-cli).


Updates `webpack-cli` from 5.1.4 to 6.0.0
- [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/webpack-cli@5.1.4...webpack-cli@6.0.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

shifter/package.json

@@ -24,7 +24,7 @@
     "style-loader": "^4.0.0",
     "tailwindcss": "^3.4.17",
     "webpack": "^5.97.1",
-    "webpack-cli": "^5.1.4"
+    "webpack-cli": "^6.0.0"
   },
   "dependencies": {
     "filepond": "^4.32.5",