[upd] web-client (simple): Bump webpack in /client/simple

Bumps [webpack](https://github.com/webpack/webpack) from 5.99.5 to 5.99.6.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](https://github.com/webpack/webpack/compare/v5.99.5...v5.99.6)

---
updated-dependencies:
- dependency-name: webpack
  dependency-version: 5.99.6
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

client/simple/package.json

@@ -32,7 +32,7 @@
     "vite": "^6.3.2",
     "vite-plugin-static-copy": "^2.3.1",
     "vite-plugin-stylelint": "^6.0.0",
-    "webpack": "^5.99.5",
+    "webpack": "^5.99.6",
     "webpack-cli": "^6.0.1"
   },
   "dependencies": {