Update testing installation docs to use ros-apt-source package (backport #5783) #5788
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Description
This PR unifies the deb testing repository instruction to those on the Kilted docs.
Additionally a NEW section with the RPM instructions is added to indicate how to do the switch between testing and main on rpm.
Fixes #5773
Did you use Generative AI?
I did not use any generative AI.
Additional Information
These changes should be ported over to jazzy, humble and kilted.
This is an automatic backport of pull request #5783 done by [Mergify](https://mergify.com).