rqt_common_plugins: 0.3.9-0 in 'hydro/distribution.yaml' [bloom]

Increasing version of package(s) in repository `rqt_common_plugins` to `0.3.9-0`:

- upstream repository: https://github.com/ros-visualization/rqt_common_plugins.git
- release repository: https://github.com/ros-gbp/rqt_common_plugins-release.git
- distro file: `hydro/distribution.yaml`
- bloom version: `0.5.11`
- previous version for package: `0.3.8-0`

## rqt_action

- No changes

## rqt_bag

```
* fix visibility with dark Qt theme (#263 <https://github.com/ros-visualization/rqt_common_plugins/issues/263>)
```

## rqt_bag_plugins

```
* add missing dependency on python-cairo (#269 <https://github.com/ros-visualization/rqt_common_plugins/issues/269>)
```

## rqt_common_plugins

- No changes

## rqt_console

- No changes

## rqt_dep

- No changes

## rqt_graph

```
* fix rendering of namespace boxes (#266 <https://github.com/ros-visualization/rqt_common_plugins/issues/266>)
```

## rqt_image_view

- No changes

## rqt_launch

- No changes

## rqt_logger_level

- No changes

## rqt_msg

- No changes

## rqt_plot

```
* fix handling of variable-sized arrays (#261 <https://github.com/ros-visualization/rqt_common_plugins/issues/261>)
```

## rqt_publisher

- No changes

## rqt_py_common

- No changes

## rqt_py_console

- No changes

## rqt_reconfigure

- No changes

## rqt_service_caller

- No changes

## rqt_shell

- No changes

## rqt_srv

- No changes

## rqt_top

- No changes

## rqt_topic

- No changes

## rqt_web

- No changes