Bump tests/specifications from 7891688 to f354960 (#1648)

Syncs tests for PHPLIB-1652 and PHPLIB-1650

Bumps [tests/specifications](https://github.com/mongodb/specifications) from `7891688` to `f354960`.
- [Release notes](https://github.com/mongodb/specifications/releases)
- [Commits](mongodb/specifications@7891688...f354960)

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

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

Author: dependabot[bot]