Bump org.eclipse.rdf4j:rdf4j-bom from 5.0.2 to 5.0.3 in /rdf4j (#1690)

Author: dependabot[bot]

rdf4j/pom.xml

@@ -15,7 +15,7 @@
 
   <properties>
     <maven.compiler.release>8</maven.compiler.release>
-    <rdf4j.version>5.0.2</rdf4j.version>
+    <rdf4j.version>5.0.3</rdf4j.version>
   </properties>
 
   <dependencyManagement>