Ruff CI job doesn't check any files
bin/test-utils/ruff
always fails to call ./bin/test-utils/is-file-type
but because that command is used in a pipeline, bin/test-utils/ruff
still exits with 0:
+ ./bin/test-utils/is-file-type filter --zero python
/usr/bin/env: 'python3': No such file or directory
xargs: stat: terminated by signal 13
+ exit 0
See for example: https://gitlab.tails.boum.org/tails/tails/-/jobs/121275#L429