Fix failing tests
Tests are failing on the master
branch with this error:
Fatal error: Trait 'Prophecy\PhpUnit\ProphecyTrait' not found in /var/www/code/web/core/tests/Drupal/TestTools/PhpUnitCompatibility/PhpUnit9/TestCompatibilityTrait.php on line 12
This appears to be a core issue, so probably not too much to do here.
Edited by Jonathan Hedstrom