pr2_apps: 0.5.12-0 in 'hydro/distribution.yaml' [bloom]

Increasing version of package(s) in repository `pr2_apps` to `0.5.12-0`:

- upstream repository: https://github.com/PR2/pr2_apps.git
- release repository: https://github.com/TheDash/pr2_apps-release.git
- distro file: `hydro/distribution.yaml`
- bloom version: `0.5.12`
- previous version for package: `0.5.11-0`

## pr2_app_manager

- No changes

## pr2_apps

- No changes

## pr2_mannequin_mode

```
* Updated maintainership
* Contributors: TheDash
```

## pr2_position_scripts

- No changes

## pr2_teleop

- No changes

## pr2_teleop_general

- No changes

## pr2_tuckarm

- No changes