test(client): Upgrade libpnet depedency to 0.27.2 [#2347] (#2348)

Additionally, only depend on pnet_datalink to reduce compile times.

Closes #2347

src/client/connect/http.rs

@@ -723,7 +723,7 @@ mod tests {
         let mut ip_v4 = None;
         let mut ip_v6 = None;
 
-        let ips = pnet::datalink::interfaces()
+        let ips = pnet_datalink::interfaces()
             .into_iter()
             .flat_map(|i| i.ips.into_iter().map(|n| n.ip()));