ucode: update to Git HEAD (2025-09-29)

ucode: update to Git HEAD (2025-09-29)

f642f65c3d00 rtnl: optimize string attribute encoding
1946c571eb25 nl80211: rework string attribute encoding
6b16cd37373a nl80211: properly handle decoding numeric struct members
5a342b86c010 nl80211: support sending requests on listener socket
cd2850eec8ca lib: fix `rindex()` return value when needle at the start of the haystack
23b21eb2e8cb ubus: add connection functions to global scope
a5b206f60f5d struct: align `X` and `Z` length & truncation semantics with `*`
387880348c89 nl80211: read all pending event messages
470bc3ebffe0 uloop: fix potential use-after-free when destroying uloop entities

Signed-off-by: Felix Fietkau <nbd@nbd.name>