Bump spec_tests/hed-specification from 7f3868b to be850ba

Bumps [spec_tests/hed-specification](https://github.com/hed-standard/hed-specification) from `7f3868b` to `be850ba`.
- [Release notes](https://github.com/hed-standard/hed-specification/releases)
- [Commits](hed-standard/hed-specification@7f3868b...be850ba)

---
updated-dependencies:
- dependency-name: spec_tests/hed-specification
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>