Reduce concurrency for build tests

Was the change to core/tests/Drupal/BuildTests/Command/GenerateThemeTest.php add just for an example?

@smustgrave no it's so it runs earlier with the lower concurrency, so that faster tests run later and finish at the same time.

Ah gotcha, that was my only question.

nod_ → closed merge request !9247

Committed and pushed b410d970bb to 11.x and 83577062df to 11.0.x and 152bf5654a to 10.4.x and 42daff7ca3 to 10.3.x. Thanks!

Automatically closed - issue fixed for 2 weeks with no activity.