Downgrade elasticsearch-py to work with OpenSearch

Change-Id: I4e90f861bb0dbd945614bab5c49c70562b187a7f
Related-PROD: PRODX-20803
diff --git a/requirements.txt b/requirements.txt
index c61bad2..16cbdd0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@
 click==8.0.1
 click-config-file==0.6.0
 configobj==5.0.6
-elasticsearch==7.14.0a1
+elasticsearch==7.13.4
 jog==0.1.1
 prometheus-client==0.11.0
 prometheus-es-exporter==0.14.0