chore(deps): bump specifications/dev from ea5a6d8 to be9bc03 (#469)

Bumps [specifications/dev](https://github.com/ome/ngff-spec) from `ea5a6d8` to `be9bc03`.
- [Release notes](https://github.com/ome/ngff-spec/releases)
- [Commits](ome/ngff-spec@ea5a6d8...be9bc03)

---
updated-dependencies:
- dependency-name: specifications/dev
  dependency-version: be9bc03c2e133d7835b69d698c29b1a3a3ea9a2d
  dependency-type: direct:production
...

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Author: dependabot[bot]