npm(deps-dev): bump the eslint group with 2 updates

Bumps the eslint group with 2 updates: [@next/eslint-plugin-next](https://github.com/vercel/next.js/tree/HEAD/packages/eslint-plugin-next) and [eslint-config-next](https://github.com/vercel/next.js/tree/HEAD/packages/eslint-config-next).


Updates `@next/eslint-plugin-next` from 16.3.8 to 16.4.0
- [Release notes](https://github.com/vercel/next.js/releases)
- [Commits](https://github.com/vercel/next.js/commits/v16.4.0/packages/eslint-plugin-next)

Updates `eslint-config-next` from 16.3.8 to 16.4.0
- [Release notes](https://github.com/vercel/next.js/releases)
- [Commits](https://github.com/vercel/next.js/commits/v16.4.0/packages/eslint-config-next)

---
updated-dependencies:
- dependency-name: "@next/eslint-plugin-next"
  dependency-version: 16.4.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: eslint
- dependency-name: eslint-config-next
  dependency-version: 16.4.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: eslint
...

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Author: dependabot[bot]