fix: kafka-webview-ui/pom.xml to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JAVA-ORGAPACHEAVRO-8161188

Author: snyk-bot

kafka-webview-ui/pom.xml

@@ -32,7 +32,7 @@
         <java.version>1.8</java.version>
 
         <!-- Dependency versions -->
-        <avro.version>1.11.1</avro.version>
+        <avro.version>1.11.4</avro.version>
         <bootstrap.version>4.0.0-beta</bootstrap.version>
         <kafka.version>2.8.2</kafka.version>
         <protobuf.version>3.21.9</protobuf.version>