Bumps [handlebars](https://github.com/wycats/handlebars.js) from 4.7.3 to 4.7.7.
- [Release notes](https://github.com/wycats/handlebars.js/releases)
- [Changelog](https://github.com/handlebars-lang/handlebars.js/blob/master/release-notes.md)
- [Commits](https://github.com/wycats/handlebars.js/compare/v4.7.3...v4.7.7)

Signed-off-by: dependabot[bot] <support@github.com>

• Commit bb1ae53
• #306: build(deps): bump handlebars from 4.7.3 to 4.7.7 in /packages/cita-sdk
• Branch develop

dependabot[bot] authored GitHub committed