Bump io.netty:netty-bom from 4.1.121.Final to 4.2.5.Final

Bumps [io.netty:netty-bom](https://github.com/netty/netty) from 4.1.121.Final to 4.2.5.Final.
- [Commits](netty/netty@netty-4.1.121.Final...netty-4.2.5.Final)

---
updated-dependencies:
- dependency-name: io.netty:netty-bom
  dependency-version: 4.2.5.Final
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

build.gradle

@@ -61,7 +61,7 @@ dependencies {
     testImplementation 'org.apache.logging.log4j:log4j-slf4j-impl:2.16.0'
     testImplementation "org.apache.kafka:connect-api:$kafkaVersion"
 
-    implementation platform('io.netty:netty-bom:4.1.121.Final') // override Netty transitive dependencies to latest
+    implementation platform('io.netty:netty-bom:4.2.5.Final') // override Netty transitive dependencies to latest
     // Marked as compile-only to prevent conflicts with Kafka runtime, since the runtime already has the Kafka APIs.
     // See https://docs.confluent.io/platform/current/connect/devguide.html#create-an-archive
     compileOnly "org.apache.kafka:connect-api:$kafkaVersion"