[jvm-packages] Bump rapids version. (dmlc#9482)

Author: trivialfis

jvm-packages/pom.xml

@@ -43,8 +43,8 @@
         <maven.wagon.http.retryHandler.count>5</maven.wagon.http.retryHandler.count>
         <log.capi.invocation>OFF</log.capi.invocation>
         <use.cuda>OFF</use.cuda>
-        <cudf.version>23.04.0</cudf.version>
-        <spark.rapids.version>23.04.1</spark.rapids.version>
+        <cudf.version>23.08.0</cudf.version>
+        <spark.rapids.version>23.08.0</spark.rapids.version>
         <cudf.classifier>cuda11</cudf.classifier>
         <scalatest.version>3.2.16</scalatest.version>
         <scala-collection-compat.version>2.10.0</scala-collection-compat.version>