Method getMockForAbstractClass() of class PHPUnit\Framework\TestCase is deprecated in PHPUnit 10 - replace in class LockBackendAbstractTest

Based on other ones the new Stub looks good.

Not sure if CRs should be opened for the Stubs or not needed? But coverage doesn't appear to be lost.

catch → closed merge request !9384

Committed/pushed to 11.x, thanks!

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