chore(deps): bump kafkaVersion from 2.2.0 to 3.8.0

Bumps `kafkaVersion` from 2.2.0 to 3.8.0.

Updates `org.apache.kafka:connect-api` from 2.2.0 to 3.8.0

Updates `org.apache.kafka:connect-json` from 2.2.0 to 3.8.0

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

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

build.gradle

@@ -57,7 +57,7 @@ wrapper {
 }
 
 ext {
-    kafkaVersion = "2.2.0"
+    kafkaVersion = "3.8.0"
     slf4jVersion = "2.0.12"
     elasticJavaClientVersion = "7.17.18"
     testContainersElasticVersion = "1.19.7"