[Dependabot] Update phpunit/phpunit requirement from 8.5.42 to 8.5.44

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Updates the requirements on phpunit/phpunit to permit the latest version.

Changelog

Sourced from phpunit/phpunit's changelog.

[8.5.44] - 2025-08-20

Changed

• Do not configure report_memleaks setting (which will be deprecated in PHP 8.5) for PHPT processes

[8.5.43] - 2025-08-10

Changed

• Do not use ReflectionProperty::setAccessible() with PHP >= 8.1
• Do not use SplObjectStorage methods that will be deprecated in PHP 8.5

[8.5.42] - 2025-05-02

Changed

• #5956: Improved handling of deprecated E_STRICT constant
• Improved message when test is considered risky for printing unexpected output

[8.5.41] - 2024-12-05

Fixed

• #6071: PHP Archives (PHARs) of PHPUnit 8.5 and PHPUnit 9.6 bundle outdated versions of Prophecy

[8.5.40] - 2024-09-19

Changed

• #5956: Deprecation of the E_STRICT constant in PHP 8.4
• Removed .phpstorm.meta.php file as methods such as TestCase::createStub() use generics / template types for their return types and PhpStorm, for example, uses that information

[8.5.39] - 2024-07-10

Changed

• Updated dependencies (so that users that install using Composer's --prefer-lowest CLI option also get recent versions)

[8.5.38] - 2024-04-05

Changed

• The namespaces of dependencies are now prefixed with PHPUnitPHAR instead of just PHPUnit for the PHAR distribution of PHPUnit

[8.5.37] - 2024-03-06

Changed

• Improve output of --check-version CLI option

... (truncated)

Commits

• e1d7ab6 Prepare release
• 0eae114 Do not set "report_memleaks" which will be deprecated in PHP 8.5
• 3e6c8e2 Update tools
• 091ee8e Use actions/download-artifact@v5
• a297317 Use actions/checkout@v5
• e2e36f0 Prepare release
• 34d3039 Update dependencies
• 116c19d Do not use SplObjectStorage methods that will be deprecated in PHP 8.5
• bd861af Do not use ReflectionProperty::setAccessible() with PHP >= 8.1
• e581053 Include information about keeping up to date with PHPUnit
• Additional commits viewable in compare view

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