chore(deps): bump @next/env from 13.4.6 to 13.4.7

Bumps [@next/env](https://github.com/vercel/next.js/tree/HEAD/packages/next-env) from 13.4.6 to 13.4.7.
- [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/v13.4.7/packages/next-env)

---
updated-dependencies:
- dependency-name: "@next/env"
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]