chore(deps): update rust crate hostname to 0.4

Author: renovate[bot]

Cargo.lock

@@ -285,7 +285,7 @@ fundu = "2.0.0"
 gcd = "2.3"
 glob = "0.3.1"
 half = "2.4"
-hostname = "0.3"
+hostname = "0.4"
 indicatif = "0.17"
 itertools = "0.12.1"
 libc = "0.2.153"