Update CHANGELOG.md for #26264

CHANGELOG.md

@@ -8,6 +8,7 @@ ENHANCEMENTS:
 
 BUG FIXES:
 * `azurerm_express_route_circuit_peering`, `azurerm_express_route_circuit`, `azurerm_express_route_gateway`, `azurerm_express_route_port` - split create and update [GH-26237]
+* `azurerm_lb_backend_address_pool_address` - when using this resource, values are no longer reset on `azurerm_lb_backend_address_pool` [GH-26264]
 * `azurerm_route_filter` - split create and update [GH-26266]
 * `azurerm_route_server` - split create and update [GH-26266]
 * `azurerm_virtual_network` - Fix Parsing of NSG ID [GH-26283]