2.1.1

What's Changed

• Bump actions/checkout from 2.4.0 to 3 by @dependabot in #39
• Bump shivammathur/setup-php from 2.17.0 to 2.17.1 by @dependabot in #38
• Enable parallel run for rector by @zingimmick in #40

Full Changelog: 2.1.0...2.1.1