Bump org.apache.flink:flink-clients in /jvm-packages

Bumps [org.apache.flink:flink-clients](https://github.com/apache/flink) from 1.18.0 to 1.19.0.
- [Commits](apache/flink@release-1.18.0...release-1.19.0)

---
updated-dependencies:
- dependency-name: org.apache.flink:flink-clients
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

jvm-packages/pom.xml

@@ -33,7 +33,7 @@
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
-        <flink.version>1.18.0</flink.version>
+        <flink.version>1.19.0</flink.version>
         <junit.version>4.13.2</junit.version>
         <spark.version>3.4.1</spark.version>
         <spark.version.gpu>3.4.1</spark.version.gpu>