rqt_dotgraph: 0.0.4-1 in 'rolling/distribution.yaml' [bloom]

[xydesa]

Increasing version of package(s) in repository rqt_dotgraph to 0.0.4-1:

• upstream repository: https://github.com/niwcpac/rqt_dotgraph.git
• release repository: https://github.com/ros2-gbp/rqt_dotgraph-release.git
• distro file: rolling/distribution.yaml
• bloom version: 0.12.0
• previous version for package: null

rqt_dotgraph

* Contributors: Alexander Xydes, Thomas Denewiler

[MichaelOrlov]

The first things first.
The license should be one of the open-source ones listed in https://opensource.org/licenses (preferably one of the "Popular licenses").
Although, the Creative Commons Zero v1.0 Universal license under which the rqt_dotgraph was released is not on the list.

However, the rqt_dotgraph sources are already in the index. This PR is only for adding binaries.

cc: @clalancette, @cottsay I would appreciate a second opinion on this PR.

[xydesa]

@MichaelOrlov here's the previous conversation about the license for this package: #40169 (comment)

[clalancette]

This is fine; we've already accepted the package with the license, the adding of the release section here is fine.