## What’s changed

## ⬆️ Dependency updates

- Bump ludeeus/action-shellcheck from 1.0.0 to 1.1.0 @dependabot (#67)
- Bump docker/build-push-action from v2.3.0 to v2.4.0 @dependabot (#68)
- Bump docker/setup-buildx-action from v1.1.1 to v1.1.2 @dependabot (#69)
- Bump docker/setup-qemu-action from v1.0.1 to v1.0.2 @dependabot (#70)
- ⬆️ Upgrades add-on base image to v9.1.7 @sinclairpaul (#71)
- ⬆ Update Bookstack to v21.04 @sinclairpaul (#72)