Show config file path when verify fails

[eusebiu-constantin-petu-dbk]

Describe the bug When zot verify a config file, show its path in case it fails, currently the path is not printed and it's hard to find out what file is invalid when running make verify-config.

Expected behavior Show config file path when zot verify fails

Additional context https://github.com/project-zot/zot/runs/7557737499?check_suite_focus=true#step:8:1195