chore(deps): bump specifications/0.5 from acb23fb to 15eea05 (#457)

Bumps [specifications/0.5](https://github.com/ome/ngff-spec) from `acb23fb` to `15eea05`.
- [Release notes](https://github.com/ome/ngff-spec/releases)
- [Commits](ome/ngff-spec@acb23fb...15eea05)

---
updated-dependencies:
- dependency-name: specifications/0.5
  dependency-version: 15eea0529954a6fbc7c9fe5d4516390322628f9c
  dependency-type: direct:production
...

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Author: dependabot[bot]