Gerrit 127863 was merged 48 hours ago, but the test runners are still using an older rule set, as is clear from https://integration.wikimedia.org/ci/job/mediawiki-core-phpcs-strict-HEAD/9608/console on gerrit 129442.
Please make the CodeSniffer rule set update automatically on machines running tests.
The jobs are being deleted with T90943: Convert existing legacy phpcs jobs to use composer entry point + versioning. One completed, we can get rid of the old .git repo.