chore(deps): bump docs/themes/docsy from 3b84825 to bbf68d4 (#968)

Bumps [docs/themes/docsy](https://github.com/google/docsy) from `3b84825` to `bbf68d4`.
- [Release notes](https://github.com/google/docsy/releases)
- [Commits](google/docsy@3b84825...bbf68d4)

---
updated-dependencies:
- dependency-name: docs/themes/docsy
  dependency-version: bbf68d4caae52e8c9a89964c3d04b383ee678d44
  dependency-type: direct:production
...

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Author: dependabot[bot]