Bump apps/shinycms-ruby from `3990bdc` to `b9340b1`
Bump apps/shinycms-ruby from `3990bdc` to `b9340b1`

Bumps [apps/shinycms-ruby](https://github.com/denny/ShinyCMS-ruby) from `3990bdc` to `b9340b1`.
- [Release notes](https://github.com/denny/ShinyCMS-ruby/releases)
- [Commits](https://github.com/denny/ShinyCMS-ruby/compare/3990bdc91afebb60cbc023341f4b4053e270a10c...b9340b1d0e3f4e0dfc299915f39268d472ed7469)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
eliotsykes/real-world-rails