cob_control: 0.6.4-0 in 'indigo/distribution.yaml' [bloom]

Increasing version of package(s) in repository `cob_control` to `0.6.4-0`:

- upstream repository: https://github.com/ipa320/cob_control.git
- release repository: https://github.com/ipa320/cob_control-release.git
- distro file: `indigo/distribution.yaml`
- bloom version: `0.5.15`
- previous version for package: `0.6.2-0`

## cob_base_velocity_smoother

- No changes

## cob_collision_velocity_filter

- No changes

## cob_control

- No changes

## cob_control_mode_adapter

- No changes

## cob_footprint_observer

- No changes

## cob_frame_tracker

- No changes

## cob_hardware_interface

- No changes

## cob_lookat_controller

- No changes

## cob_model_identifier

- No changes

## cob_omni_drive_controller

```
* Merge branch 'indigo_dev' into indigo_release_candidate
* update deps
* Contributors: Florian Weisshardt
```

## cob_path_broadcaster

- No changes

## cob_trajectory_controller

- No changes

## cob_twist_controller

- No changes