Merge remote-tracking branch 'upstream/2.12.x' into 1.x

* upstream/2.12.x:
  Bump infection/infection from 0.20.2 to 0.21.0
  Bump vimeo/psalm from 4.3.2 to 4.4.1
  Bump phpunit/phpunit from 9.5.0 to 9.5.1

Author: nicolas-grekas