Fixed missing sh:value at uniqueMembers test case

Author: HolgerKnublauch

shacl12-test-suite/tests/core/node/uniqueMembers-001.ttl

@@ -48,6 +48,7 @@ ex:list1
           sh:resultSeverity sh:Violation ;
           sh:sourceConstraintComponent sh:UniqueMembersConstraintComponent ;
           sh:sourceShape ex:ListShape ;
+          sh:value ex:list1 ;
           sh:detail [
             rdf:type sh:ValidationResult ;
             sh:focusNode ex:list1 ;