build(deps-dev): Bump eslint-config-next from 15.3.5 to 16.0.6

Bumps [eslint-config-next](https://github.com/vercel/next.js/tree/HEAD/packages/eslint-config-next) from 15.3.5 to 16.0.6.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](https://github.com/vercel/next.js/commits/v16.0.6/packages/eslint-config-next)

---
updated-dependencies:
- dependency-name: eslint-config-next
  dependency-version: 16.0.6
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

apps/playground-web/package.json

@@ -59,7 +59,7 @@
     "autoprefixer": "^10.4.21",
     "eslint": "8.57.0",
     "eslint-config-biome": "1.9.4",
-    "eslint-config-next": "15.3.5",
+    "eslint-config-next": "16.0.6",
     "eslint-plugin-react-compiler": "19.1.0-rc.2",
     "knip": "5.60.2",
     "postcss": "8.5.6",