build(deps): bump minimum tokio version to v1.25 to avoid deps.rs warning

Author: paolobarbolini

Cargo.toml

@@ -19,7 +19,7 @@ pnet_packet = "0.35"
 socket2 = { version = "0.5.1", features = ["all"] }
 
 getrandom = "0.3.1"
-tokio = { version = "1.15", features = ["net", "sync", "rt"] }
+tokio = { version = "1.25", features = ["net", "sync", "rt"] }
 
 # weak
 libc = "0.2"