chore(deps-dev): bump hardhat from 2.0.11 to 2.6.7

[dependabot]

Bumps hardhat from 2.0.11 to 2.6.7.

Release notes

Sourced from hardhat's releases.

Hardhat v2.6.7

This release fixes two issues:

• A bug that prevented Hardhat to compile files that concatenated several strings (#1801)
• A bug in our implementation of eth_feeHistory (#1848)

Hardhat v2.6.6

This release fixes an issue that broke Hardhat Network when contracts were compiled in the middle of its execution

Hardhat v2.6.5

This release adds a new sample project with a TypeScript setup. It also makes some improvements in the Advanced sample project.

Hardhat v2.6.4

This release fixes a bug in Hardhat Network's solidity source maps processing. Thanks @​paulberg!

Hardhat v2.6.3

This release fixes a bug (#1564 ) that prevented Hardhat Network's tracing engine from working if an interface was used as a mapping key. Huge thanks to @​k06a for their contribution!

Hardhat v2.6.2

This release fixes an issue (#1828) with networks that support eth_feeHistory but that don't support EIP-1559.

hardhat-etherscan v2.1.6

This release adds support for verifying contracts in Arbiscan, the block explorer for Arbitrum.

Hardhat v2.6.1

This PR fixes three issues.

• The Hardhat node had an issue when you connected to it via websocket. Now websocket connections should work fine.
• debug_traceTransaction can be used with transactions sent from impersonated accounts.
• evm_setNextBlockTimestamp, evm_increaseTime and evm_mine now will accept hex strings as arguments.

Additionally, there’s a new advanced sample project that creates a realistic project boilerplate. Try it by running npx hardhat in an empty directory and choosing the “Create an advanced sample project” option.

Thanks to @​ngotchac, @​shuklaayush and @​wolflo for their contributions!

hardhat-etherscan v2.1.5

This version fixes a problem with verification in the Optimism networks.

Huge thanks to @​mds1 for working on this!

PR: #1775

Hardhat v2.6.0

This release enables the London hardfork by default in the Hardhat Network, changes some other default values in the configuration, and drops support for Node 10.

All of these are technically breaking changes, but most users shouldn't be affected by them. If you want to preserve the previous behavior, use Hardhat v2.5.0, or explicitly set the updated configuration values to their previous defaults.

The default values that have changed are:

• hardfork: the previous default was "berlin", the new default is "london"
• blockGasLimit: the previous default was 12_450_000, the new default is 30_000_000

... (truncated)

Commits

• 9a9d299 Version Packages
• 1cab375 Merge pull request #1975 from nomiclabs/changesets-config-update
• 6644bbb Fix linter error
• 2d18962 Merge pull request #1973 from nomiclabs/changests-ignore-private-packages
• 9a8618d Merge pull request #1970 from nomiclabs/custom-solc-tests-fix
• c3d6ed5 Merge pull request #1971 from nomiclabs/two-branches-development
• 3f677c3 Fix linter error
• bb5e05f Update CONTRIBUTING.md
• b5a65e9 Fix linter errors
• 33cb210 Update vuepress config
• Additional commits viewable in compare view

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[dependabot]

Superseded by #296.