A new phpstan job was recently added → to GitLab configuration for contrib modules.
However, it's failing for us while trying to run the executable:
https://git.drupalcode.org/project/single_content_sync/-/jobs/237949
Could not open input file: vendor/bin/phpstan
Upon further investigation, it seems like it's happening since we're using Drupal core 9.5.11 for running CI jobs which doesn't have phpstan composer dependency.
Check latest pipelines logs.
Remove PHP and core versions variables form .gitlab-ci.yml and see if it fixes phpstan job.
Fixed
1.4
Code