Bump tests/specifications from 60fe09f to d9b434d (#1574)

Bumps [tests/specifications](https://github.com/mongodb/specifications) from `60fe09f` to `d9b434d`.
- [Release notes](https://github.com/mongodb/specifications/releases)
- [Commits](mongodb/specifications@60fe09f...d9b434d)

---
updated-dependencies:
- dependency-name: tests/specifications
  dependency-type: direct:production
...

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