Set the stable checkbox in the release pipeline workflow as true by default

[oscerd]

Please describe the task that needs to be done

This will avoid problems in case of forgetting to set it

[lhein]

I am not sure that is a good idea. wouldn'T that mean there is a high risk now that we release the operator with an unstable version of kaoto?

[oscerd]

If you don't set the stable version in the kaoto release, you cannot release the operator, because you won't have a stable image, so you will end up using the old stable.

[oscerd]

I think @lordrip could help in the discussion.