ruby_gems: Fixes asdf

[s34m]

Closes #348

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
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[s34m]

@paddyroddy Could you try this patch out?

[paddyroddy]

@paddyroddy Could you try this patch out?

Works a treat 👌

[s34m]

Great to hear that