HSEARCH-4265 Raise to 7 mssql timestamp column precision

According to the mssql documentation 7 is the default but let's try it anyway

mapper/orm/src/main/java/org/hibernate/search/mapper/orm/outbox/impl/OutboxAdditionalJaxbMappingProducer.java

@@ -47,7 +47,7 @@ public class OutboxAdditionalJaxbMappingProducer implements org.hibernate.boot.s
 
 	private static final String DEFAULT_TYPE_TIMESTAMP = "TIMESTAMP";
 	private static final String MYSQL_TYPE_TIMESTAMP = "TIMESTAMP(6)";
-	private static final String MSSQL_TYPE_TIMESTAMP = "datetime2";
+	private static final String MSSQL_TYPE_TIMESTAMP = "datetime2(7)";
 
 	private static final String TYPE_TIMESTAMP_PLACEHOLDER = "{{type_timestamp}}";
 	private static final String CURRENT_TIMESTAMP_PLACEHOLDER = "{{current_timestamp}}";