Consider replacing TDNF with DNF5 in deliverables (containers, etc.)

[Conan-Kudo]

Is your feature request related to a problem? Please describe.
We're adding support for Azure Linux to Mock's default distribution targets, and it turns out we cannot leverage Azure Linux containers because they use TDNF instead of either DNF4 or DNF5.

Describe the solution you'd like
I'd like to see Azure Linux replace its usage of TDNF with DNF5, as the latter is more feature rich, supported by the broader ecosystem better, and should not have a significant impact on image sizes.

Describe alternatives you've considered
We currently aren't using the containers at all, and so Mock needs to manually bootstrap the distribution environment every time, which is much slower.

Additional context
rpm-software-management/mock#1536