fix(deps): update dependency org.apache.kafka:kafka-clients to v3.9.0 (…

…#247)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Sverre H. Huseby <shh@thathost.com>

pom.xml

@@ -9,8 +9,8 @@
     <properties>
         <java.version>21</java.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <kafka.version>3.8.1</kafka.version>
-	<k3a.embedded.version>0.5.6+${kafka.version}</k3a.embedded.version>
+        <kafka.version>3.9.0</kafka.version>
+	<k3a.embedded.version>0.5.7+${kafka.version}</k3a.embedded.version>
         <maven-surefire.version>3.5.2</maven-surefire.version>
         <prometheus.version>1.3.2</prometheus.version>
     </properties>