chore: [updatecli] Update latest snapshot to 9.1.0-15efddb6 (#2549)

Made with ❤️️ by updatecli

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]

Makefile

@@ -76,7 +76,7 @@ test-stack-command-8x:
 	./scripts/test-stack-command.sh 8.19.0-e182bbbc-SNAPSHOT
 
 test-stack-command-9x:
-	./scripts/test-stack-command.sh 9.1.0-a388efa6-SNAPSHOT
+	./scripts/test-stack-command.sh 9.1.0-15efddb6-SNAPSHOT
 
 test-stack-command-with-apm-server:
 	APM_SERVER_ENABLED=true ./scripts/test-stack-command.sh