Add sprint summary for 2024-13

Change-Id: I5c59d610707be12762598b1fe9f118085cb1a67b

website/content/sprints/2024/sprint-2024-13.rst

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+Sprint 2024 Aug 30 to 2024 Sep 18 summary
+#########################################
+
+:date: 2024-09-18 10:00
+:category: blog
+:authors: The Software Factory Team
+
+Below are the tasks we worked on during our last sprint.
+
+Opendev
+-------
+
+* We updated OpenSearch cluster to 2.15.0
+* We have investigated an occasional busy loop condition in the zuul-scheduler
+
+Software Factory - sf-operator
+------------------------------
+
+* We bumped zuul version to 11.1.0
+* We fixed the zookeeper cert auto-gen issue
+* We have fixed the volume expend system when sts have multiple replicas
+* We have released multiple versions of sf-operator