Fix tests that were failling on my machine

[mattwynne]

🤔 What's changed?

Explicitly enable gpg key signing when creating a commit in the test repo, and expect that in our tests

⚡️ What's your motivation?

Something must have changed in my local configuration, and these tests started failing because the commits were being signed. I'm just making that explicit for everyone.

🏷️ What kind of change is this?

• :bank: Refactoring/debt/DX (improvement to code design, tooling, documentation etc. without changing behaviour)

📋 Checklist:

• [x] I agree to respect and uphold the Cucumber Community Code of Conduct
• [x] I've changed the behaviour of the code
  • [x] I have added/updated tests to cover my changes.

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[mpkorstanje]

Sounds like the git version got updated on your machine.