Server release for boojnet #13

chore: Restore contract verification tests (#419)

# What ❔

- restoring contract verification tests
- bumping hardhat and hardhat-vyper

## Why ❔

A bug in hardhat-vyper was fixed, hence we can compile vyper again.

## Checklist

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<!-- For draft PRs check the boxes as you complete them. -->

- [ ] PR title corresponds to the body of PR (we generate changelog
entries from PRs).
- [ ] Tests for the changes have been added / updated.
- [ ] Documentation comments have been added / updated.
- [ ] Code has been formatted via `zk fmt` and `zk lint`.

Co-authored-by: Igor Borodin <hatemosphere@protonmail.com>