Elasticsearch java client migration to 8.15

NOTICE

devops/gc/deploy/values.yaml

devops/gc/pipeline/override-stages.yml

.../org/opengroup/osdu/indexer/api/RecordIndexerApiTest.java

...group/osdu/indexer/service/IndexerMappingServiceTest.java

pom.xml

...ider/indexer-gc/src/main/resources/application.properties

testing/indexer-test-aws/pom.xml

...rc/test/java/org/opengroup/osdu/util/ElasticUtilsAws.java

testing/indexer-test-azure/pom.xml

testing/indexer-test-core/pom.xml

...st-core/src/main/java/org/opengroup/osdu/util/Config.java

...e/src/main/java/org/opengroup/osdu/util/ElasticUtils.java

testing/indexer-test-ibm/pom.xml