Bump spec_tests/hed-schemas from ec0d152 to 50beb47

Bumps [spec_tests/hed-schemas](https://github.com/hed-standard/hed-schemas) from `ec0d152` to `50beb47`.
- [Release notes](https://github.com/hed-standard/hed-schemas/releases)
- [Commits](hed-standard/hed-schemas@ec0d152...50beb47)

---
updated-dependencies:
- dependency-name: spec_tests/hed-schemas
  dependency-version: 50beb4731cf3cf2ff7a49cb37976be1cdbd2a2b6
  dependency-type: direct:production
...

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Author: dependabot[bot]