Allow PHP 8.4 and 8.5

[dgburns92]

Part of the calendar-api PHP 8.3 → 8.5 hop (BT-278), wave 3 of the release train: rexlabs/hyper-http is one of the rexlabs packages whose php constraint stops Composer resolving on 8.5. Shaped like the previous PHP-support bumps in this repo.

• composer.json: php upper bound to <8.6.
• CI matrix gains 8.4 and 8.5 (php:X-cli-alpine, same job as before; checkout action on v4).
• CHANGELOG entry for 4.2.0.
• Three implicitly nullable parameters (\Throwable $previous = null in ApiException, GuzzleClient $guzzle = null and LoggerInterface $logger = null in Hyper::make() and Hyper::instance()) are declared ?\Throwable / ?GuzzleClient / ?LoggerInterface. PHP 8.4 deprecates the implicit form.

Its three rexlabs dependencies are released, so the 8.4/8.5 cells can resolve: rexlabs/utility-belt 4.2.0, rexlabs/array-object 3.2.1, rexlabs/cuzzle 3.2.0.

Release as 4.2.0 after merge.

🤖 Generated with Claude Code

[greptile-apps]

Confidence Score: 5/5

The PR appears safe to merge, with no concrete behavioral, compatibility, security, or repository-rule violations identified.

Summary

This PR extends the package’s declared and tested PHP support through PHP 8.5 while eliminating PHP 8.4 implicit-nullability deprecations.

• Expands the Composer PHP constraint from <8.4 to <8.6.
• Adds PHP 8.4 and 8.5 to both CI dependency-resolution modes.
• Makes nullable exception, Guzzle client, and logger parameters explicit.
• Documents the changes for release 4.2.0.

_{Reviews (1) · Last reviewed commit: "Allow PHP 8.4 and 8.5"}