bump ustasb from 6f2ac5c to 9cbf46a (#777)

Bumps [ustasb](https://github.com/ustasb/dotfiles) from `6f2ac5c` to `9cbf46a`.
- [Commits](ustasb/dotfiles@6f2ac5c...9cbf46a)

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

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