Bump docsify from 4.11.6 to 4.12.0
Bump docsify from 4.11.6 to 4.12.0

Bumps [docsify](https://github.com/docsifyjs/docsify) from 4.11.6 to 4.12.0.
- [Release notes](https://github.com/docsifyjs/docsify/releases)
- [Changelog](https://github.com/docsifyjs/docsify/blob/develop/CHANGELOG.md)
- [Commits](https://github.com/docsifyjs/docsify/compare/v4.11.6...v4.12.0)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
tadashi-aikawa/gemini-viewer,tadashi-aikawa/gemini-viewer,tadashi-aikawa/gemini-viewer