added info about shacl

Author: hmottestad

site/content/release-notes/5.0.0.md

@@ -7,6 +7,7 @@ RDF4J 5.0.0 is a major release of the Eclipse RDF4J framework. Some highlights:
 - Replacement of the custom Iteration interface with Java Iterable/Iterator
 - Upgrade of MapDB
 - Replacement of old openrdf.org config vocabulary IRIS with new rdf4j.org vocabulary
+- Improved SHACL validation with support for sh:closed and pairwise validation
 
 For a complete overview, see [all issues fixed in 5.0.0](https://github.com/eclipse/rdf4j/milestone/80?closed=1).