chore(deps): bump hardhat from 2.20.1 to 2.21.1

[dependabot]

Bumps hardhat from 2.20.1 to 2.21.0.

Release notes

Sourced from hardhat's releases.

Hardhat v2.21.0 — Introducing EDR

This version of Hardhat marks the debut of EDR (Ethereum Development Runtime), our new Rust-based runtime that is a complete rewrite of the original TypeScript-based Hardhat Network. This release lays a new long-term foundation for Hardhat's evolution over the coming year.

There are no functional changes, but there are some performance improvements across the board, which we’ll continue to expand in future updates.

Given the significance of this internal change, there’s a possibility of bugs. If you encounter any problems specific to this version, please report them by opening an issue. You should be able to downgrade to v2.20.1 without losing functionality if needed.

solidity-coverage out-of-memory issues

The solidity-coverage plugin works by heavily instrumenting the code, which sometimes causes OOM (out-of-memory) issues. This new version of Hardhat can, in certain cases, make those problems more likely.

If you run into this, you can fix it by using Node.js’s --max-old-space-size flag:

NODE_OPTIONS="--max-old-space-size=8192" npx hardhat coverage

Dropping support for Node.js v16

As part of this release, we are dropping support for Node.js v16. This version of Node.js reached its end-of-life in September of last year. You can learn more about our support guarantees here.

Commits

• 2b0563b Version Packages
• 9b0f366 edr-0.2.0
• 88b8741 Merge pull request #4902 from NomicFoundation/post-release-cleanup
• 8a45de9 Merge pull request #4949 from NomicFoundation/edr/fix-provider-error-object
• 5abd444 Use Options's .copied instead of .cloned
• 88c4597 Merge branch 'main' into edr/fix-provider-error-object
• 379d31a Merge pull request #4954 from NomicFoundation/edr/fix-oom
• a5f0a7e Don't run async event handlers if there are no listeners
• e59d054 Make sendRawTx test work on forks
• e4247f0 Put data and transactionHash as top-level error fields
• Additional commits viewable in compare view

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.

---

Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR:

• @dependabot rebase will rebase this PR
• @dependabot recreate will recreate this PR, overwriting any edits that have been made to it
• @dependabot merge will merge this PR after your CI passes on it
• @dependabot squash and merge will squash and merge this PR after your CI passes on it
• @dependabot cancel merge will cancel a previously requested merge and block automerging
• @dependabot reopen will reopen this PR if it is closed
• @dependabot close will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually
• @dependabot show <dependency name> ignore conditions will show all of the ignore conditions of the specified dependency
• @dependabot ignore this major version will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this minor version will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this dependency will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)

[netlify]

✅ Deploy Preview for maci-typedoc ready!

Name	Link
🔨 Latest commit	ba6e236
🔍 Latest deploy log	https://app.netlify.com/sites/maci-typedoc/deploys/65f33fc2407d710008e05b88
😎 Deploy Preview	https://deploy-preview-1271--maci-typedoc.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[0xmad]

Related to NomicFoundation/hardhat#4963