apt_security_updates fact is missing if no other updates available

[jamesps-ebi]

Describe the Bug

For hosts that have no pending updates (neither security, or other), the 'apt_security_updates' fact is not reported.
By comparison, if a host has no pending security updates, but has other updates pending, the 'apt_security_updates' fact is reported with a value of 0

Expected Behavior

The 'apt_security_updates' fact should always be reported, even if there are no updates pending.

Steps to Reproduce

Steps to reproduce the behavior:

1. From any debian-based host, install all pending updates (security and non-security).
2. Force check-in with Puppet server
3. View reported facts on the Puppet server.

Environment

• Module Version 9.0.0
• Agent Platform Ubuntu 20.04 and 22.04