Bump spec_tests/hed-specification from 570ae3e to 9a22f15

Bumps [spec_tests/hed-specification](https://github.com/hed-standard/hed-specification) from `570ae3e` to `9a22f15`.
- [Release notes](https://github.com/hed-standard/hed-specification/releases)
- [Commits](hed-standard/hed-specification@570ae3e...9a22f15)

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

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