Warning of deprecated functions when trying to upgrade from v19 to v20

[1989gironimo]

/!\ Packagers! This app is still using the skipped/protected/unprotected_uris/regex settings which are now obsolete and deprecated... Instead, you should use the new helpers 'ynh_permission_{create,urls,update,delete}' and the 'visitors' group to initialize the public/private access. Check out the documentation at the bottom of yunohost.org/groups_and_permissions to learn how to use the new permission mechanism.

AND

/!\ Packagers! You are probably using a lua regex. You should use a PCRE regex instead.