ubus: update to Git HEAD (2026-05-23)

ubus: update to Git HEAD (2026-05-23)

4b274055ede3 libubus: fix NULL dereference on OOM in ubus_queue_msg
8b5be570f13e libubus-acl: fix dangling pointers on blob_memdup failure in acl_recv_cb
9105ea2a349a ubusd_acl: fix NULL dereference on OOM in ubusd_acl_alloc_obj
07d7f34ac278 ubusd_acl: handle allocation failures in ubusd_acl_init_client
497321a5ea90 ubusd_acl: fix NULL dereference on OOM in ubusd_acl_init
f66d52ba983f ubusd_event: fix OOM handling in ubusd_send_event_msg
11ea1b3bdbea ubusd_main: fix async-signal-unsafe SIGHUP handler
0c095592ccb7 ubusd_proto: fix resource leaks and ID tree corruption in ubusd_proto_new_client
f61695e6e12a ubusd_proto: fix NULL dereference for user/group in ubusd_handle_add_watch
7ecacfadd9bc ubusd_proto: fix NULL dereference on OOM in ubusd_proto_init_retmsg
3ab9d7759545 lua: fix inverted argument check in ubus_lua_add
43051ca73aec lua: fix unchecked calloc and memory leak in ubus_lua_load_object
4ca0b141e9a7 ubusd_id: use getrandom(2) unconditionally on Linux
7e4356da8abe ubusd_monitor: fix NULL dereference on OOM in ubusd_monitor_message
5849870f2251 libubus-req: fix file descriptor leaks in ubus_process_req_msg
f29767f90af1 libubus: fix file descriptor leaks in ubus_process_msg
b099d050b59d libubus: make ubus_shutdown idempotent
a564b8dcb395 ubusd_main: check strdup return value in mkdir_sockdir
239edcbaaac8 ubusd_id: fix continue in do-while skipping random ID retry
09d2df45bf38 ubusd: fix NULL dereference on OOM in ubus_msg_enqueue
bcc45ca981fd libubus: actually set FD_CLOEXEC on the ubus socket
8188f5ce8564 libubus-io: close recv_fd captured before get_next_msg failure
7a068bac5a9b libubus-io: byte-swap peer in HELLO when storing as local_id
747013f6ea05 libubus-io: reset sock.fd to -1 after close on ubus_reconnect error path
020a64b9b169 ubusd_acl: use size_t for strlen result in ubusd_acl_alloc_obj
f92ffd289dcc ubusd: use size_t for string and blob length variables
795b32bb96b6 ubusd: use fixed-width types for sequence counters

Link: https://github.com/openwrt/openwrt/pull/23487
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>