update nullnet-libipinfo dependency to fix low-severity vulnerability

Author: GyulyVGC

Cargo.lock

@@ -30,7 +30,7 @@ strip = true
 nullnet-libdatastore = "0.5.1"
 #nullnet-liblogging = "0.3.0"
 nullnet-liberror = "0.1.1"
-nullnet-libipinfo = "0.2.0"
+nullnet-libipinfo = "0.2.1"
 nullnet-libtoken = "0.3.3"
 serde = { version = "1.0.218", features = ["derive"] }
 serde_json = "1.0.139"