Update other major updates (major)

[renovate]

Note

Mend has cancelled the proposed renaming of the Renovate GitHub app being renamed to mend[bot].

This notice will be removed on 2025-10-07.

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This PR contains the following updates:

Package	Type	Update	Change	Age	Confidence
actions/checkout	action	major	v4 -> v5
actions/setup-node	action	major	v4 -> v5
hardhat (source)	devDependencies	major	^2.26.3 -> ^3.0.6
solhint (source)	devDependencies	major	^5.2.0 -> ^6.0.1

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Release Notes

actions/checkout (actions/checkout)

v5

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actions/setup-node (actions/setup-node)

v5

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NomicFoundation/hardhat (hardhat)

v3.0.6

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Patch Changes

• 609d05c: Add deprecation warning for testFail_* test functions
• 8c1cb1e: Fixed dependencies for Hardhat so rpc utils can be loaded (#​7415)

v3.0.5

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Patch Changes

• bebf87c: Added support for Linea network verification, thanks @​kyzooghost (#​7357)
• 0bfe6ac: Fixed coverage report when loading data from large test suites (#​7385)
• be469d6: Display an error message when attempting to use a global hardhat installation in a local repo (#​5362)
• 49cc9ba: Load resolved global options into environment variables during tests (#​7305)
• 8d3b16c: Support for custom compilers (#​7130)
• a475780: Added automatic proxy detection for hardhat-verify and fixed case-insensitive proxy environment variables for network requests (#​7407)
• 3996886: Fixed getBuildInfoPath and getBuildInfoOutputPath to correctly return undefined when build info files are missing 7052

v3.0.4

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Patch Changes

• af301a8: Update validation for solidity test config (#​7205)

v3.0.3

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Patch Changes

• 34a5bc9: Fixed an issue when making historical calls in a forked network (#​7271)
• e0e658a: Upgraded EDR to 0.12.0-next.5. This brings a fix for expectEmit cheatcode stack traces and performance improvements from upgrading to REVM 27 (#​1063)

v3.0.2

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Patch Changes

• d45d544: Fixed passing global network options to node:test and mocha subprocesses (#​7248)
• 003e72c: Help message phrasing unified
• 0120e67: Added warning when running with a non-LTS Node version (#​7167)
• 9261714: Update npm module regex to include versions in solidity imports (#​7308)

v3.0.1

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Patch Changes

• a3bd239: Add Yarn support for Hardhat v3 (#​7192)
• 617254e: Move extraneous dependency to peer (#​7231)
• 6446a38: Add temporary fix for incorrect error message (#​7168)
• 6361ea4: Fixed an issue with compiling a Hardhat project after switching OS users (#​7161)
• 5c9ee7f: Warn the user if they are not using the latest version of Hardhat
• 0fc1f3f: Remove full stops from help message descriptions (#​7185)
• 8acf48f: Improved exception filtering for Sentry telemetry (#​7246)
• e7d2f80: Added missing Solidity test config option allowInternalExpectRevert.

v3.0.0

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Major Changes

• 29cc141: First release of Hardhat 3!

protofire/solhint (solhint)

v6.0.1

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🛠️ Fix: no-unused-vars for modifiers

🛠️ Fix: no-unused-imports handled for multiline @​inheritdoc. Eliminates missed detections with multiline inheritance docs

🛠️ Fix: func-name-mixedcase improvement, added snake case exception in interface (naming). Aligns interface naming edge cases

🛠️ Fix: misc minor issues; docs link and typos. General polish and stability

🧰 Infra: Update GitHub Actions in CI workflows. Keeps CI up to date and consistent across jobs

🧰 Infra: Ignore enhancement to mimic as regular linters

🧹 Chore: Remove fs-extra dependency. Simplifies deps

🧹 Chore: Remove strip-ansi. Cleans unused/legacy deps

🧹 Chore: Changed changelog format

🧱 Enhancement: added config for no-unused-vars to validate parameters or not

🧱 Validation: Improve AJV schema validation and related caching approach. More robust/faster config validation

✨🛡️ Kudos to our contributors! 🛡️✨

• @​smol-ninja 🏅
• @​talentlessguy 🏅
• @​loki-sama
• @​gonzaotc
• @​kilavvy
• @​jmendiola222
• @​Daulox92
• @​RidaMichofi
• @​ddnexus
• @​zeevick10
• @​RyanRHall
• @​fulldecent
• @​ncjones

v6.0.0

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BREAKING CHANGE

Some rules were removed from the recommended ruleset and other were promoted. See below:
Rules revision - #​692

🟥 DEMOTED

• payable-fallback: Outdated due to the introduction of receive(); rarely needed in modern Solidity.
  
  

✅ PROMOTED

• interface-starts-with-i: Promotes clarity by clearly distinguishing interfaces from contracts.
• gas-calldata-parameters: Encourages optimal memory usage for external functions.
• gas-increment-by-one: Suggests using ++i style for gas-efficient increments.
• gas-indexed-events: Improves event indexing for off-chain systems and reduces gas usage.
• gas-small-strings: Recommends cheaper encoding using bytes32 for short strings.
• gas-strict-inequalities: Helps avoid subtle off-by-one bugs in range conditions.
• gas-struct-packing: Maximizes storage efficiency by suggesting tight struct packing.
• duplicated-imports: Prevents redundant imports that bloat the AST and confuse code structure.
• import-path-check: Ensures all imported files exist and resolve correctly, avoiding runtime errors.
• function-max-lines: Encourages smaller, more readable and maintainable functions.
• constructor-syntax: Enforces modern constructor syntax for consistency and clarity.
• use-natspec: Promotes proper documentation with NatSpec for better audits and readability.

Fixed

• gas-struct-packing false positives - #​690
• gas-increment-by-one backward expression - #​691
• Typo (thanks to @​MarkFizz77)

Added

• use-natspec: Promote the use of natspec and make several checks to enforce it - #​689

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