uclient: update to Git HEAD (2024-04-05)

uclient: update to Git HEAD (2024-04-05)

e209a4ced1d8 add strdupa macro for compatibility
af1962b9a609 uclient: add helper function for getting ustream-ssl context/ops
488f1d52cfd2 http: add helper function for checking redirect status
b6e5548a3ecc uclient: defer read notifications to uloop timer
352fb3eeb408 http: call ustream_poll if not enough read data is available
e611e6d0ff0b add ucode binding
ddb18d265757 uclient: add function for getting the amount of pending read/write data
980220ad1762 ucode: fix a few ucode binding issues
6c16331e4bf5 ucode: add support for using a prototype for cb, pass it to callbacks

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