Added PHP 8.3 support

Reverted PHP_CodeSniffer dependency back from PHPCSStandards to squiz…

…labs

Upgraded Composer to 2.6.5. Changed PHP_CodeSniffer dependency from s…

…quizlabs to PHPCSStandards

Added PHP 8.2 support. Upgraded PHP patch versions

Added PHP 8.1 support. Upgraded PHP patch versions

Upgraded PSR12Ext to v7.0. Removed PHP 7.1 support. Minor improvements

Updated tests to comply 5.1.0

Added basic tests

Added PHP 8.0.3. Upgraded PHP patch versions to 7.4.16, 7.3.27