conflicting namespace prefix in geodcat-ap-SHACL.ttl

[NielsHoffmann]

This is an issue from the GeoDCAT-AP 3.0.0 pilot.

In the geodcat-ap-SHACL.ttl file the following is declared:
@prefix dc: <http://purl.org/dc/terms/> .

typically de dc: prefix is reserved for http://purl.org/dc/elements/1.1/
while dcterms: is the most commonly used prefix for 'http://purl.org/dc/terms/`

The use of a conflicting prefix causes issues with the use of python rdflib and pyshacl for validation.
While I would prefer dcterms as prefix, I see the xslt is declaring dct: which is used inside the uri's of the nodeShapes as well.
Using dct would solve the conflict with rdflib/pyshacl as well.