[data-plane]: Bump vertx.version from 4.0.2 to 4.0.3 in /data-plane (#800)
[data-plane]: Bump vertx.version from 4.0.2 to 4.0.3 in /data-plane (#800)

Bumps `vertx.version` from 4.0.2 to 4.0.3.

Updates `vertx-stack-depchain` from 4.0.2 to 4.0.3

Updates `vertx-junit5` from 4.0.2 to 4.0.3

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

Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
knative-sandbox/eventing-kafka-broker,knative-sandbox/eventing-kafka-broker,knative-sandbox/eventing-kafka-broker