chore(deps-dev): bump hardhat from 2.0.11 to 2.6.2

[dependabot]

Bumps hardhat from 2.0.11 to 2.6.2.

Release notes

Sourced from hardhat's releases.

Hardhat v2.6.2

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

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 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
• gasPrice: the previous default was 8_000_000_000, the new default is "auto".

Read this document to learn more about how we use semver and why and how we introduce breaking changes.

Hardhat v2.5.0

This release adds support for the upcoming London hardfork to Hardhat.

Enabling the London support

This version of Hardhat doesn't run Hardhat Network using London by default. To use this hardfork, you need to have these config fields:

networks: {
  hardhat: {
    hardfork: "london",
    gasPrice: "auto"
  } 
}

Base fee selection

The London hardfork includes the long-awaited EIP-1559, which changes how transactions pay to be included in the Ethereum blockchain. This includes a new concept called base fee.

To configure the base fee of the first local block, set the initialBaseFeePerGas property in the Hardhat Network configuration:

module.exports = {
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... (truncated)

Commits

• deaa288 Merge pull request #1843 from nomiclabs/changeset-release/master
• 6d85b3f Version Packages
• fa3d22c Merge pull request #1841 from nomiclabs/check-node-supports-1559
• 0941cf3 Make prettier ignore CHANGELOG.md files
• 2371f3f Link relevant issue in changeset
• abc380c Add changeset
• a625652 Use gasPrice if node doesn't support EIP1559
• 7eaec9c Merge pull request #1839 from nomiclabs/changeset-release/master
• d7acdad Version Packages
• 477191b Merge pull request #1838 from fredlacs/master
• Additional commits viewable in compare view

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[dependabot]

Superseded by #264.