Bump kafkaVersion from 3.5.1 to 3.6.1

Bumps `kafkaVersion` from 3.5.1 to 3.6.1.

Updates `org.apache.kafka:kafka-clients` from 3.5.1 to 3.6.1

Updates `org.apache.kafka:connect-api` from 3.5.1 to 3.6.1

---
updated-dependencies:
- dependency-name: org.apache.kafka:kafka-clients
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.apache.kafka:connect-api
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

build.gradle

@@ -15,7 +15,7 @@ plugins {
 }
 
 ext {
-    kafkaVersion = '3.5.1'
+    kafkaVersion = '3.6.1'
     solaceJavaAPIVersion = '10.21.0'
     isSnapshot = project.version.endsWith('-SNAPSHOT')
 }