Bump registry_tools/GEDCOM.io from 6ca9181 to ab12942 (#249)

Bumps [registry_tools/GEDCOM.io](https://github.com/FamilySearch/GEDCOM.io) from `6ca9181` to `ab12942`.
- [Commits](FamilySearch/GEDCOM.io@6ca9181...ab12942)

---
updated-dependencies:
- dependency-name: registry_tools/GEDCOM.io
  dependency-version: ab12942cb169f87c8e8511260d7a0f0ed9fb9496
  dependency-type: direct:production
...

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