HSEARCH-5440 Add Elasticsearch 8.19.0 compatibility

Author: marko-bekhta

backend/elasticsearch/src/main/java/org/hibernate/search/backend/elasticsearch/dialect/impl/ElasticsearchDialectFactory.java

@@ -203,7 +203,7 @@ private ElasticsearchProtocolDialect createProtocolDialectElasticV7(Elasticsearc
 	}
 
 	private ElasticsearchProtocolDialect createProtocolDialectElasticV8(ElasticsearchVersion version, int minor) {
-		if ( minor > 18 ) {
+		if ( minor > 19 ) {
 			VersionLog.INSTANCE.unknownElasticsearchVersion( version );
 		}
 		else if ( minor == 0 ) {

backend/elasticsearch/src/test/java/org/hibernate/search/backend/elasticsearch/dialect/impl/ElasticsearchDialectFactoryTest.java

@@ -301,14 +301,22 @@ public static List<? extends Arguments> params() {
 						ElasticsearchDistributionName.ELASTIC, "8.18.0", "8.18.0",
 						Elasticsearch814ModelDialect.class, Elasticsearch81ProtocolDialect.class
 				),
-				successWithWarning(
+				success(
 						ElasticsearchDistributionName.ELASTIC, "8.19", "8.19.0",
 						Elasticsearch814ModelDialect.class, Elasticsearch81ProtocolDialect.class
 				),
-				successWithWarning(
+				success(
 						ElasticsearchDistributionName.ELASTIC, "8.19.0", "8.19.0",
 						Elasticsearch814ModelDialect.class, Elasticsearch81ProtocolDialect.class
 				),
+				successWithWarning(
+						ElasticsearchDistributionName.ELASTIC, "8.20", "8.20.0",
+						Elasticsearch814ModelDialect.class, Elasticsearch81ProtocolDialect.class
+				),
+				successWithWarning(
+						ElasticsearchDistributionName.ELASTIC, "8.20.0", "8.20.0",
+						Elasticsearch814ModelDialect.class, Elasticsearch81ProtocolDialect.class
+				),
 				success(
 						ElasticsearchDistributionName.ELASTIC, "9.0", "9.0.0",
 						Elasticsearch814ModelDialect.class, Elasticsearch81ProtocolDialect.class