fix sending headers in responses to clients

add epochs into conflicts

2263053 - CUPS/libppd PPD generators didn't check required attrs when deciding which driverless format to use,

require authselect-libs, since we use PAM modules password-auth or system-auth
got pam downstream patch upstream, use the commit from there

Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild

Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild

2257981 - /var/cache/cups is not owned by any package

add weak dependency on cups-filters-driverless for F40+

2254578 - cupsGetJobs() failes because libcups fails to connect to domain socket

make a weak dep on cups-browsed to prevent cups-browsed disappearing

use pkgconfig in macros.cups and add new macros

fix memory leaks when unloading job

2239982 - cups-2.4.7 is available

use unified __python macro

comply the upgrade script with python2 as well if needed

add upgrade script for setting authentication for CUPS-Get-Document operation