Linting using recommended rules results in canonical_prefixes issue

[jsheunis]

See https://github.com/psychoinformatics-de/datalad-concepts/actions/runs/10195446753/job/28204172170?pr=177:

 Run linter
/home/runner/work/datalad-concepts/datalad-concepts/src/prov/unreleased.yaml
  warning  Schema maps prefix 'DCAT' to namespace 'http://www.w3.org/ns/dcat#' instead of using prefix 'dcat'  (canonical_prefixes)
  warning  Schema maps prefix 'DCTYPES' to namespace 'http://purl.org/dc/dcmitype/' instead of using prefix 'dctypes'  (canonical_prefixes)

Not sure if this always errored out or some recent changes to either the prefix names in this repository or the linter in linkml are causing the failure.