unetd: update to Git HEAD (2024-12-16)

unetd: update to Git HEAD (2024-12-16)

d22d7db581d5 bpf_skb_utils.h: add missing include to fix build against newer kernel headers
bbd3e0eb1419 host: fix peer routes on a node acting as gateway
b17164751fc7 unet-tool: add support for generating keys from salt + seed passphrase
041e05870c20 unet-tool: add support for dumping pubkey from signed file
b58920d420cb unet-tool: add support for extracting network data from signed bin file
f335f5b40b4e unet-cli: add support for generating key from seed
8b1f1d099352 unet-cli: add support for importing networks from signed data
188ba05eadf2 unet-cli: add missing command line help for import
8f15fc306a40 unet-cli: fix add-ssh-host with seed keys
486bc3b86dc2 pex-msg: enable broadcast for global PEX socket
e4a24cdfbc1c unet-cli: fix defaults on create

Signed-off-by: Felix Fietkau <nbd@nbd.name>
(cherry picked from commit af1740a28b63ecc6683dceb249a1f75af5e9098d)