2.3.0-RC2 - released 2022-03-20

Changelog

Fixed invalid return value in ComposerRepository::findPackage (#10622)
Fixed many show command issues due to a flipped condition (#10623)
Fixed phpversion() handling when it returns false due to an extension defining no version (#10631)
Fixed remove command failing when no allow-plugin is defined in config (#10629)
Performance improvement in Composer bootstrapping (version guessing) when on a feature branch (#10632)