Bump spec_tests/hed-specification from 0289e6d to 8e796da

Bumps [spec_tests/hed-specification](https://github.com/hed-standard/hed-specification) from `0289e6d` to `8e796da`.
- [Release notes](https://github.com/hed-standard/hed-specification/releases)
- [Commits](hed-standard/hed-specification@0289e6d...8e796da)

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

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