chore: upgrade Utopia Client to ^0.4

[ChiragAgg5k]

Summary

Require utopia-php/client: ^0.4 instead of the previous 0.2/0.3 range. No dual ranges or version aliases.

Refresh the tracked lockfile to Client 0.4.3 and its required Pools 2.1.2, PSR-7 0.2.2, and Telemetry 0.4.9 dependencies. SDK APIs are unchanged. A release is needed before downstream applications can resolve this constraint.

Verification

• composer test: 25 tests, 107 assertions passed; network-free SDK tests.
• composer analyze, composer format:check, and composer refactor:check: passed.
• Composer validation and git diff --check: passed.
• Composer reported no security advisories.

Dependency installation used --ignore-platform-reqs; tests ran on PHP 8.5.10. No live executor integration was performed. No visual evidence applies to this dependency-only change.

[greptile-apps]

Confidence Score: 4/5

This PR is not safe to merge until its declared PHP support is aligned with the PHP 8.5 minimum imposed by Utopia Client 0.4.

Findings

1.  PHP Support Becomes Inaccurate ▶

Summary

• Resolves Utopia Client 0.4.3, Pools 2.1.2, PSR-7 0.2.2, and Telemetry 0.4.9.
• Introduces an unresolved platform-contract mismatch: the SDK advertises PHP 8.4 support while its required client needs PHP 8.5.