v2.4.0 - Drop PHP 7.2 and 7.3

What's Changed

Drops support for PHP 7.2 and 7.3

PR's

• Provide psr/container-implementation
• Test in PHP 8.1 by @donatj in #10
• Update corpus/coding-standard requirement from ^0.4 to ^0.6 by @dependabot in #11
• Bump actions/checkout from 2 to 3 by @dependabot in #12
• Test in PHP 8.2 by @donatj in #13
• Update minimum PHP to 7.4 by @donatj in #14
• Add coverage by @donatj in #15

Full Changelog: v2.3.0...v2.4.0