Support PHP 8.3

[spaze]

What's Changed

• Support PHP 8.3 (Support PHP 8.3 #217)
• Bump actions/checkout from 3 to 4 (Bump actions/checkout to v4 #218)

Did you know you can use @dependabot to update your actions, not just your code? I've updated my article which mentions Dependabot https://www.michalspacek.com/dont-let-security-bugs-catch-you-off-guard#github-dependabot

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This discussion was created from the release Support PHP 8.3.