fix: pom.xml to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JAVA-ORGAPACHEKAFKA-8528112

Author: snyk-bot

pom.xml

@@ -22,7 +22,7 @@
     <maven.compiler.source>1.8</maven.compiler.source>
     <maven.compiler.target>1.8</maven.compiler.target>
 
-    <kafka.version>3.8.0</kafka.version>
+    <kafka.version>3.8.1</kafka.version>
   </properties>
 
   <dependencyManagement>