opg-client version to 23.4.0 (#898)

Author: ddrechse

workshops/microservices-data-refactoring/dra-graph-client/pom.xml

@@ -10,7 +10,7 @@
 		<dependency>
 			<groupId>com.oracle.database.graph</groupId>
 			<artifactId>opg-client</artifactId>
-			<version>22.4.1</version>
+			<version>23.4.0</version>
 		</dependency>
 	</dependencies>
 
@@ -64,4 +64,4 @@
 
 
 	</build>
-</project>
+</project>