Bump org.eclipse.rdf4j:rdf4j-bom from 4.3.7 to 4.3.8 in /rdf4j (#766)

Bumps [org.eclipse.rdf4j:rdf4j-bom](https://github.com/eclipse/rdf4j) from 4.3.7 to 4.3.8.
- [Release notes](https://github.com/eclipse/rdf4j/releases)
- [Commits](eclipse-rdf4j/rdf4j@4.3.7...4.3.8)

---
updated-dependencies:
- dependency-name: org.eclipse.rdf4j:rdf4j-bom
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]

rdf4j/pom.xml

@@ -16,7 +16,7 @@
   <properties>
     <maven.compiler.target>1.8</maven.compiler.target>
     <maven.compiler.source>1.8</maven.compiler.source>
-    <rdf4j.version>4.3.7</rdf4j.version>
+    <rdf4j.version>4.3.8</rdf4j.version>
   </properties>
 
   <dependencyManagement>