Bump org.apache.kafka:kafka-clients

Bumps org.apache.kafka:kafka-clients from 2.2.2 to 3.9.1.

---
updated-dependencies:
- dependency-name: org.apache.kafka:kafka-clients
  dependency-version: 3.9.1
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/flink-end-to-end-tests/flink-sql-client-test/pom.xml b/flink-end-to-end-tests/flink-sql-client-test/pom.xml
index 439ade2..66b3745 100644
--- a/flink-end-to-end-tests/flink-sql-client-test/pom.xml
+++ b/flink-end-to-end-tests/flink-sql-client-test/pom.xml
@@ -68,7 +68,7 @@
 		<dependency>
 			<groupId>org.apache.kafka</groupId>
 			<artifactId>kafka-clients</artifactId>
-			<version>3.2.3</version>
+			<version>3.9.1</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
@@ -92,7 +92,7 @@
 					as we neither access nor package the kafka dependencies -->
 				<groupId>org.apache.kafka</groupId>
 				<artifactId>kafka-clients</artifactId>
-				<version>2.2.2</version>
+				<version>3.9.1</version>
 			</dependency>
 		</dependencies>
 	</dependencyManagement>