Bump sound_api_core from 6956e49 to 39c02a9 (#4)

Bumps [sound_api_core](https://github.com/mt-mods/sound_api_core) from `6956e49` to `39c02a9`.
- [Release notes](https://github.com/mt-mods/sound_api_core/releases)
- [Commits](mt-mods/sound_api_core@6956e49...39c02a9)

---
updated-dependencies:
- dependency-name: sound_api_core
  dependency-type: direct:production
...

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