Updated code for the email signature while sending emails

src/main/java/net/gepafin/tendermanagement/dao/HubDao.java

@@ -49,7 +49,7 @@ public class HubDao {
 		hubRepository.save(hubEntity);
 	}
 
-	private HubEntity validateHub(Long hubId) {
+	public HubEntity validateHub(Long hubId) {
 		return hubRepository.findById(hubId)
 				.orElseThrow(() -> new ResourceNotFoundException(Status.NOT_FOUND,
 						Translator.toLocale(GepafinConstant.HUB_NOT_FOUND)));