build(deps-dev): bump @nomicfoundation/hardhat-toolbox

Bumps [@nomicfoundation/hardhat-toolbox](https://github.com/nomicfoundation/hardhat) from 4.0.0 to 5.0.0.
- [Release notes](https://github.com/nomicfoundation/hardhat/releases)
- [Commits](https://github.com/nomicfoundation/hardhat/compare/@nomicfoundation/[email protected]...@nomicfoundation/[email protected])

---
updated-dependencies:
- dependency-name: "@nomicfoundation/hardhat-toolbox"
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>