Release 1.15.2 for resources

Release 1.15.2 for resources

- rename LegacyMoxyConsumer to ResourcesController
  and introduce ResourcesService
- refactor ResourcesController integration tests
- upgrade spring boot (2.5.15 -> 2.6.15)
- migrate aai-schema-ingest module to JUnit 5
- upgrade guava (31.1-jre -> 33.3.1-jre)
- exclude vulnerable rabbitmq dependency of janusgraph-core
- upgrade logback (1.2.3 + 1.2.7 -> 1.2.13)

Issue-ID: AAI-4064
Change-Id: I4a7d625c23f7864f630ab0585d9a740191c56f92
Signed-off-by: Fiete Ostkamp <Fiete.Ostkamp@telekom.de>