fix(deps): update dependency execa to v6

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
execa	^5.0.0 -> ^6.0.0

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Release Notes

sindresorhus/execa

v6.1.0

Compare Source

• Support AbortController (#​490) c6e791a
• Allow cwd and localDir options to be URLs (#​492) 93ab929

v6.0.0

Compare Source

Breaking

• Require Node.js 12.20 (#​478) 7707880
• This package is now pure ESM. Please read this.
• Moved from a default export to named exports.
  • require('execa') → import {execa} from 'execa'
  • require('execa').sync → import {execaSync} from 'execa'
  • require('execa').command → import {execaCommand} from 'execa'
  • require('execa').commandSync → import {execaCommandSync} from 'execa'
  • require('execa').node → import {execaNode} from 'execa'

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