CakePHP Authentication 3.0.3

What's Changed

• 3.x: change composer.json to cake5 stable version by @LordSimal in #632
• Bump actions/checkout from 3 to 4 by @dependabot in #634
• Update constants by @ADmad in #635
• adjust 3.x docs config by @LordSimal in #637
• adjust 3.x dockerfiles by @LordSimal in #638
• 3.x: adjust docs by @LordSimal in #639
• add docs on how to test basic/digest auth by @LordSimal in #640
• Fix Inline Code Formatting by @amayer5125 in #642
• Allow psr/http-message ^1.0 next to ^2.0 by @swiffer in #644
• Run composer normalize over composer.json by @dereuromark in #649

Full Changelog: 3.0.2...3.0.3