Reopen of #267 Fixes rubygems on .deb distros

[s34m]

Closes #259

Standards checklist:

• The PR title is descriptive.
• 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
  • I also tested that Topgrade skips the step where needed

If you developed a feature or a bug fix for someone else and you do not have the
means to test it, please tag this person here.
@Zahrun please test

[Zahrun]

I built the branch and ran topgrade, it skips the step successfully. Thank you.