Update libmdns to 0.8

Signed-off-by: Christian König <[email protected]>

Author: yubiuser

discovery/Cargo.toml

@@ -19,7 +19,7 @@ futures-core = "0.3"
 futures-util = "0.3"
 hmac = "0.12"
 hyper = { version = "0.14", features = ["http1", "server", "tcp"] }
-libmdns = "0.7"
+libmdns = "0.8"
 log = "0.4"
 rand = "0.8"
 serde_json = "1.0"