Switch to PHPCSStandards/PHP_CodeSniffer & raise minimum supported version

[jrfnl]

⚠️ This is a DRAFT PR on purpose as it references releases which have not yet been tagged. Once the PHPCS 3.8.0 tag is available (which contains the Composer replace directive), this can/should be merged and released ASAP. ⚠️

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Switch to PHPCSStandards/PHP_CodeSniffer

The Squizlabs repo has been abandoned. The project continues in a fork in the PHPCSStandards organisation.

Ref:

• squizlabs/PHP_CodeSniffer#3932

Composer: raise the minimum supported PHPCS + PHPCSUtils versions

PHPCSUtils 1.0.9 has been released and raises the minimum supported PHPCS version to 3.8.0 for improved PHP 8.2 support.

Ref:

• https://github.com/PHPCSStandards/PHPCSUtils/releases/tag/1.0.9
• https://github.com/PHPCSStandards/PHP_CodeSniffer/releases/tag/3.8.0

[jrfnl]

The releases are now available.