Update phpunit/phpunit requirement from ^7.5.20 to ^8.5.28

[dependabot[bot]]

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

Changelog

Sourced from phpunit/phpunit's changelog.

[8.5.28] - 2022-07-29

Fixed

• #5015: Ukraine banner unreadable on black background
• #5016: PHPUnit 8.5.27 does not work on PHP 7.2.0-7.2.18 and PHP 7.3.0-7.3.5

[8.5.27] - 2022-06-19

Fixed

• #4950: False error on atMost() invocation rule without call
• #4962: Ukraine banner unreadable on white background

[8.5.26] - 2022-04-01

Fixed

• #4938: Test Double code generator does not handle void return type declaration on __clone() methods

[8.5.25] - 2022-03-16

Fixed

• #4934: Code Coverage does not work with PHPUnit 8.5.24 PHAR on PHP 7

[8.5.24] - 2022-03-05 - #StandWithUkraine

Changed

• #4874: PHP_FLOAT_EPSILON is now used instead of hardcoded 0.0000000001 in PHPUnit\Framework\Constraint\IsIdentical

Fixed

• When the HTML code coverage report's configured low upper bound is larger than the high lower bound then the default values are used instead

[8.5.23] - 2022-01-21

Fixed

• #4799: Memory leaks in PHPUnit\Framework\TestSuite class
• #4857: Result of debug_backtrace() is not used correctly

[8.5.22] - 2021-12-25

Changed

• #4812: Do not enforce time limits when a debugging session through DBGp is active
• #4835: Support for $GLOBALS['_composer_autoload_path'] introduced in Composer 2.2

... (truncated)

Commits

• 8f2d1c9 Prepare release
• 59da20d Update ChangeLog
• 78493ab Do not pass null to ReflectionClass::getMethods()
• 9edbd2e Update tools
• 3aacfdf Update tools
• 43344fc Fix CS/WS issues
• 3feccbd Update tools
• dbbca19 Update ChangeLog
• 48db8b2 Update tests.
• 232327b Update StandWithUkraine message color.
• Additional commits viewable in compare view

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[dependabot[bot]]

Superseded by #242.