docs: add changelog for #10902

changes/ce/fix-10902.en.md

@@ -0,0 +1,6 @@
+Avoid syncing cluser.hocon file from the nodes runing a newer version than self.
+
+During cluster rolling upgrade, if an older version node has to restart due to whatever reason,
+if it copies the cluster.hocon file from a newer version node, it may fail to start.
+After this fix, the older version node will not copy the cluster.hocon file from a newer,
+so it will use its own cluster.hocon file to start.