Hey there 
My server has quarantined a file from one of my WordPress installations: ~/wp-content/plugins/simple-tags/vendor/publishpress/wordpress-version-notices/tests/bootstrap.php. It flagged this file as potential malware due to a specific line of code: shell_exec('./bin/update-code-for-tests.sh');. Can you explain what this line does?
Thank you for your help!
Warm regards from 
,
Ludovic