chore: upgrade Utopia Client to ^0.4

[ChiragAgg5k]

Summary

Upgrade utopia-php/client to ^0.4, without a dual range or version alias. Refresh the tracked lockfile to Client 0.4.3 and PSR-7 0.2.2. No source or query behavior changes.

A release is needed after merge before downstream dependency updates can resolve this constraint.

Verification

On PHP 8.5.10 with Client 0.4.3:

• Selected network-free usage tests (MetricTest, SampleTest, AccumulatorTest, TenantTest, UsageQueryTest, SampleWatermarkTest): 113 tests, 448 assertions passed.
• XDEBUG_MODE=off php -d memory_limit=1G vendor/bin/phpunit --filter '/ClickHouse/', with CLICKHOUSE_HOST/PORT/PASSWORD targeting an isolated ClickHouse 25.11 container: 222 tests, 1,014 assertions passed. PHP reported deprecations for the existing reflection helpers. Container removed after verification.
• composer check, composer lint, Composer validation, and git diff --check: passed.
• MariaDB and benchmark suites were not run. An initial host run without ClickHouse failed DNS resolution; an initial integration run exhausted the default 128 MB limit while Xdebug expanded deprecation traces. The isolated rerun above completed successfully.
• composer audit reports PKSA-61k5-cqr9-b8b4 for the unchanged locked mongodb/mongodb dependency. This dependency-only PR does not resolve that advisory.

Dependency installation used --ignore-platform-reqs. No production services or visual UI flows were involved.

[greptile-apps]

Confidence Score: 5/5

The dependency-only upgrade appears safe to merge, with no concrete behavioral, security, or repository-rule violations identified.

Summary

• Resolves utopia-php/client to 0.4.3.
• Transitively updates utopia-php/psr7 from 0.2.0 to 0.2.2.
• Makes no source-code or query-behavior changes.