serial: 1.1.8-2 in 'hydro/distribution.yaml' [bloom]

Increasing version of package(s) in repository `serial` to `1.1.5-0` from `1.1.8-2`:

- distro file: `hydro/distribution.yaml`
- bloom version: `0.4.9`

```
Changes for serial 1.1.8:
* Nothing special
This is something else
* Another bullet point
```