chore(deps-dev): bump phpunit/phpunit from 7.5.15 to 7.5.19

[dependabot-preview]

Bumps phpunit/phpunit from 7.5.15 to 7.5.19.

Changelog

Sourced from phpunit/phpunit's changelog.

[7.5.19] - 2020-01-06

Changed

• eval-stdin.php can now only be executed with cli and phpdbg

[7.5.18] - 2019-12-06

Fixed

• Fixed #3967: Cannot double interface that extends interface that extends \Throwable
• Fixed #3968: Test class run in a separate PHP process are passing when exit called inside

[7.5.17] - 2019-10-28

Fixed

• Fixed #3727: Problem hidden by PHPUnit's error handler
• Fixed #3863: \Countable needs to be checked before \EmptyIterator

[7.5.16] - 2019-09-14

Fixed

• Fixed #3801: Class constant as default parameter is undefined
• Fixed #3834: Trailing slash breaks code coverage on Windows

Commits

• 4263f76 Prepare release
• 2076dc7 Enhancement: Use actions/checkout@v2
• 6aab040 Lets waste three more characters on a solution for a problem that should not ...
• 33585d9 Hopefully prevent execution of this script in a webserver context.
• 7a46cf1 Fix: Avoid using master for GitHub actions
• fcf6c4b Prepare release
• 2902560 Update ChangeLog
• 773be5e Ignore .psalm directory on PHPUnit 7.5 branch
• afb88b4 Adding fix
• d9d7efa Updating the test with expected behaviour
• Additional commits viewable in compare view

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[dependabot-preview]

Superseded by #22.