Updating "definitions" (deprecated) to "$defs" in some Json schemas

[jrambla]

Some Json files include the "defnitions" element.
In Json schema '2020-12' it has been deprecated to "$defs".
VS Code validator, at least, is complaining about that.

@mbaudis should I edit the json version directly or should the source generator from YAML?
(I haven't spotted the place on it)

[mbaudis]

@jrambla I'll do. The "some" adds up since it's not only the definitions: but also the references to them e.g. #/definitions/ResultsetInstance ... I'll change & make a PR for review.

Re editing: Yes, YAML version and then local use of `bin/vamlerRunner.sh' which I wrote for locally performed schema conversion. It uses a function to keep the json parameters in order; when editing by hand this might lead to changed files which git wants to update then (purely due to changed order).

[jrambla]

@mbaudis is this done and could we close the issue?

[mbaudis]

@jrambla This was addressed in #155 - but this hadn't been merged since missing a review ...

[costero-e]

Closing as this has been merged in #155.