Bump phpunit/phpunit from 9.3.7 to 9.3.8

Created by: dependabot[bot]

Bumps phpunit/phpunit from 9.3.7 to 9.3.8.

Changelog

Sourced from phpunit/phpunit's changelog.

[9.3.8] - 2020-08-27

Fixed

• #3937: Risky tests are inconsistently reported in JUnit XML
• #4435: Global assert wrappers break preloading

Commits

• 93d78d8 Prepare release
• d5be908 Fix: Regenerate psalm baseline
• a404c34 Fix: Regenerate global assert wrapper
• d4480fa Fix: invalid reference in generate-global-assert-wrappers.php
• 34f20ce Revert 794571f2e6fc44c293b0100a55c94c7ef9473cf6, hoping this makes the tests ...
• d723457 Update ChangeLog
• 7a2cfdd Trim contents of <error>, <failure>, etc. elements
• 794571f Use PHP_EOL
• 14110cc JUnit: report Risky test consistently as an error
• 5ce4160 Leftover from a1d05158e3a4294000af4b05cb8533b13425120c
• Additional commits viewable in compare view

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