umdns: update to the latest version

umdns: update to the latest version

479c7f8676d9 cache: make record/hostname lookup case-insensitive
26c97a5a50bf ubus: add a browse flag for suppressing cached ip addresses
c286c51a9bd9 Fix AVL tree traversal in cache_record_find and cache_host_is_known
4035fe42df58 interface: use a global socket instead of per-interface ones
c63d465698c7 cache: dump hostname target from srv records
b42b22152d73 use hostname from SRV record to look up IP addresses
d45c443aa1e6 ubus: add array flag support for the hosts method

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