Fix async elasticsearch to match #1690 (#1758)

* Fix async elasticsearch to match #1690

* CHANGELOG

Author: basepi

CHANGELOG.asciidoc

@@ -44,6 +44,7 @@ endif::[]
 * Small fix to underlying Starlette logic to prevent duplicate Client objects {pull}1735[#1735]
 * Change `server_url` default to `http://127.0.0.1:8200` to avoid ipv6 ambiguity {pull}1744[#1744]
 * Fix an issue in GRPC instrumentation with unsampled transactions {pull}1740[#1740]
+* Fix error in async Elasticsearch instrumentation when spans are dropped {pull}1758[#1758]
 
 
 [[release-notes-6.x]]

elasticapm/instrumentation/packages/asyncio/elasticsearch.py

@@ -106,6 +106,6 @@ async def call(self, module, method, wrapped, instance, args, kwargs):
 
             hits = self._get_hits(result_data)
             if hits:
-                span.context["db"]["rows_affected"] = hits
+                span.update_context("db", {"rows_affected": hits})
 
             return result_data