fix: skip needrestart when using nala on debian-based distro

[SteveLauC]

Standards checklist:

• The PR title is descriptive.
• I have read CONTRIBUTING.md
• The code compiles (cargo build)
• The code passes rustfmt (cargo fmt)
• The code passes clippy (cargo clippy)
• The code passes tests (cargo test)
• Optional: I have tested the code myself

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• Optional: Topgrade skips this step where needed
• Optional: The --dry-run option works with this step

If you developed a feature or a bug fix for someone else and you do not have the
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Closes #547

[SteveLauC]

cc @RayJW, here is a build with this patch included , you can test it: https://github.com/SteveLauC/topgrade/releases/tag/needrestart-debian-nala

[RayJW]

I just tested it and it works great, thanks! I just realized that the same should be done for DNF but if I understood the code correctly, then that is already the case, right?

[SteveLauC]

I just realized that the same should be done for DNF but if I understood the code correctly, then that is already the case, right?

Yep, RedHat distros are already handled