Bump js-yaml and @nomicfoundation/hardhat-toolbox in /tooling-projects/hardhat/erc20

[dependabot]

Bumps js-yaml to 4.3.0 and updates ancestor dependency @nomicfoundation/hardhat-toolbox. These dependencies need to be updated together.

Updates js-yaml from 4.1.1 to 4.3.0

Changelog

Sourced from js-yaml's changelog.

4.3.0, 3.15.0 - 2026-06-27

Security

• Backported maxTotalMergeKeys option.

[5.2.0] - 2026-06-26

Added

• Added maxTotalMergeKeys (10000) loader option to limit the total number of keys processed by YAML merge (<<) across one load() / loadAll() call.
• Added maxAliases (-1) loader option to limit the number of YAML aliases per document.

Removed

• maxMergeSeqLength replaced with maxTotalMergeKeys for limiting YAML merge processing.

Fixed

• Round-trip of integers with exponential form (>= 1e21)

[5.1.0] - 2026-06-23

Added

• Collection tags can finalize an incrementally populated carrier into a different result value.

Changed

• [breaking] quoteStyle now selects the preferred quote style; use the restored forceQuotes option to force quoting non-key strings.

[5.0.0] - 2026-06-20

Added

• Added named exports for schemas, tags, parser events and AST utilities.
• Reworked JSON_SCHEMA and CORE_SCHEMA with spec-compliant scalar resolution rules, and added YAML11_SCHEMA.
• Added realMapTag for lossless mappings with non-string and complex keys. Object-based mappings now reject complex keys instead of stringifying them.
• Added dump() transform option for changing the generated AST before rendering.
• Added dump() options seqInlineFirst, flowBracketPadding, flowSkipCommaSpace, flowSkipColonSpace, quoteFlowKeys, quoteStyle and tagBeforeAnchor.
• Added formal data layers (events and AST) for modular data pipelines.
  • Added low-level parser (to events), presenter and visitor APIs.
• Added the YAML Test Suite to the test set.

Changed

• See the migration guide for upgrade notes.
• Rewritten in TypeScript and reorganized the public API around flat named exports.

... (truncated)

Commits

• 33d05b5 4.3.0 released
• 663bfab Drop demo publish, to not override new v5 one.
• 1cb8c7b Add v4-legacy tag for publish
• 02f27af Restore umd builds back to es5
• 8be84ed Fix es5 compatibility
• 59423c6 Replace maxMergeSeqLength option with maxTotalMergeKeys (more robust). Ba...
• 6842ef6 doc polish
• 590dbab 4.2.0 released
• f944dc5 Add package.json funding field
• f692719 Changelog update
• Additional commits viewable in compare view

Updates @nomicfoundation/hardhat-toolbox from 5.0.0 to 7.0.0

Release notes

Sourced from @​nomicfoundation/hardhat-toolbox's releases.

@​nomicfoundation/hardhat-toolbox-viem@​5.0.7

Changes

• #8339 00720e8 Thanks @​alcuadrado! - The plugin now uses definePlugin from hardhat/plugins in its index.ts, so it participates in Hardhat's new "imported but unused plugin" warning when omitted from a project's plugins array.

• Updated dependencies:

  • hardhat@3.8.0

---

💡 The Nomic Foundation is hiring! Check our open positions.

---

@​nomicfoundation/hardhat-toolbox-viem@​5.0.6

Changes

• #8264 8452f97 Thanks @​alcuadrado! - Export ./package.json so consumers can import the package's manifest.

---

💡 The Nomic Foundation is hiring! Check our open positions.

---

@​nomicfoundation/hardhat-toolbox-viem@​5.0.5

Changes

• #8191 2a4ae8e Thanks @​alcuadrado! - Update how type extensions are handled to optimize the bootstrap process of Hardhat.

---

💡 The Nomic Foundation is hiring! Check our open positions.

---

Changelog

Sourced from @​nomicfoundation/hardhat-toolbox's changelog.

7.0.0

Major Changes

• 09ae6db: Deprecate the latest npm tag and redirect users to migrate to Hardhat 3 or to the hh2 tag.

Commits

• 6372d08 Version Packages
• a26e822 Remove the npm tags from the README.md files
• 18bef56 Quote the package in the installation instructions of the readmes
• e5025ae Update the formatting and quote the package in the installation instructions ...
• ee34347 Update hardhat-toolbox
• 7ade974 Version Packages
• a7e4215 feat: bump minimum version of solidity-coverage to Osaka
• e4ad0ad chore: update package metadata for provenance
• f65ee74 Version Packages
• a4f1e27 Hardhat 2 documentation links updated to reflect the domain change to v2.hard...
• Additional commits viewable in compare view

Maintainer changes

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Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	npm/​@​nomicfoundation/​hardhat-toolbox@​5.0.0 ⏵ 7.0.0	+3		-7	+1

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