ucode: update to Git HEAD (2025-07-18)

ucode: update to Git HEAD (2025-07-18)

5b3b6b789b9c ubus: fix refcount issue in uc_ubus_object_notify
f682ac2f6b82 program: add bytecode version to program header flags
af411d8101b2 vm: implement PVAL opcode
afdfffb61258 vm: support initiating method calls with I_CALL/I_QCALL opcodes
5d680425db40 compiler: stop emitting I_MCALL/I_QMCALL opcodes
a616feed39eb compiler, vm: rework optional chaining and function call semantics
0946a4fb20b8 vm: adjust JMPNT opcode behavior
6f8291f73757 compiler: improve assignment lhs expression checks
cf846c4a11d4 vm: properly handle modulo by zero
4d81e6c13506 resolv: add documentation and fix clobbering ns strings
20ee2dabd243 debian/changelog: v0.0.20250529
50d303c8309d ubus: add support for automatically subscribing to objects
5a0d21d59f88 vm: export function for converting exception to ucode value
aaf712eb4fb4 uloop: add guard() function
693af2b61b52 ubus: add guard() function

Fixes: https://github.com/jow-/ucode/issues/307
Fixes: https://github.com/jow-/ucode/issues/313
Signed-off-by: Felix Fietkau <[email protected]>