Bump tests/specifications from 9d0d3f0 to 1c1500a (#1701)

Bumps [tests/specifications](https://github.com/mongodb/specifications) from `9d0d3f0` to `1c1500a`.
- [Release notes](https://github.com/mongodb/specifications/releases)
- [Commits](mongodb/specifications@9d0d3f0...1c1500a)

---
updated-dependencies:
- dependency-name: tests/specifications
  dependency-version: 1c1500ada5e4d03c7f95e0a7a93fc0f77e5c0f76
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]