Fixes https://github.com/spring-cloud/stream-applications/issues/373 The fix in Spring Integration has made it into the latest SNAPSHOT. See more info in the linked issue * Update to the latest Testcontainers: it does not require credential for pull command any more * Remove obsolete `MessageStoreType.GEMFIRE` * Add `<doclint>syntax</doclint>` to ignore missed javadocs on public methods