Bump hardhat from 2.26.2 to 3.1.7

Bumps [hardhat](https://github.com/NomicFoundation/hardhat/tree/HEAD/v-next/hardhat) from 2.26.2 to 3.1.7.
- [Release notes](https://github.com/NomicFoundation/hardhat/releases)
- [Changelog](https://github.com/NomicFoundation/hardhat/blob/main/v-next/hardhat/CHANGELOG.md)
- [Commits](https://github.com/NomicFoundation/hardhat/commits/hardhat@3.1.7/v-next/hardhat)

---
updated-dependencies:
- dependency-name: hardhat
  dependency-version: 3.1.7
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]