openscap: unable to scan debian due to missing libapt dependency

Description of problem:

Using openscap to scan a system that use apt (such as Debian or Ubuntu) returns incomplete results. This warning is logged:

OVAL object 'dpkginfo_object' is not supported.

The problem is that openscap was built without libapt support, looking at the build log at https://build.alpinelinux.org/buildlogs/build-edge-x86_64/community/openscap/openscap-1.3.7-r3.log

-- Linux probes: ON
--   Linux dpkginfo probe (depends on aptpkg): OFF

Here's the check in the openscap project build system: https://github.com/OpenSCAP/openscap/blob/1.3.7/CMakeLists.txt#L291

Steps to Reproduce:

1. Run oscap --v

Actual results:

linux         dpkginfo                     probe_dpkginfo

is missing from the output

Expected results:

linux         dpkginfo                     probe_dpkginfo

should be in the output.