Sync the released 0.6.0 schemas, instances and vocabs.

Created by: absoludity

With this change, there is no longer any references to working within the data.

We currently only have onSnapshot syncs of data to the data-models-staging branch, so when we released 0.6.0, although Jargon then created the correct artefacts (and our existing release process published those artefacts correctly), the data-models-staging branch is not (currently) updated with the release changes.

So this PR just manually syncs the released artefacts to the data-models-staging branch before we merge that branch into main and re-sync it to HEAD to start the next snapshots for the next release.

(release-0.6.0-fix) ~/dev/gosource/spec-untp/data-models$ rg working
(release-0.6.0-fix) ~/dev/gosource/spec-untp/data-models$