Build(deps-dev): Bump webpack from 5.90.3 to 5.91.0 (#26273)

Bumps [webpack](https://github.com/webpack/webpack) from 5.90.3 to 5.91.0.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](https://github.com/webpack/webpack/compare/v5.90.3...v5.91.0)

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

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

app/assets/javascripts/admin/package.json

@@ -38,7 +38,7 @@
     "ember-source": "~5.5.0",
     "ember-source-channel-url": "^3.0.0",
     "loader.js": "^4.7.0",
-    "webpack": "^5.90.3"
+    "webpack": "^5.91.0"
   },
   "engines": {
     "node": ">= 18",