chore: bump assets from 04d6eb7 to 8d1c9b6 (#484)

Bumps [assets](https://github.com/hexojs/hexo-starter) from `04d6eb7` to `8d1c9b6`.
- [Commits](hexojs/hexo-starter@04d6eb7...8d1c9b6)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]