Build(deps): Bump webpack in /app/assets/javascripts (#22121)

Bumps [webpack](https://github.com/webpack/webpack) from 5.86.0 to 5.87.0.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](https://github.com/webpack/webpack/compare/v5.86.0...v5.87.0)

---
updated-dependencies:
- dependency-name: webpack
  dependency-type: direct:production
  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/truth-helpers/package.json

@@ -37,7 +37,7 @@
     "ember-source": "~3.28.12",
     "ember-source-channel-url": "^3.0.0",
     "loader.js": "^4.7.0",
-    "webpack": "^5.86.0"
+    "webpack": "^5.87.0"
   },
   "engines": {
     "node": "16.* || >= 18",