Fix serde YAML vulnerability

Saluki · Saluki · commit 254135e37b6b · 2022-06-15T00:04:30.000+02:00
diff --git a/Cargo.toml b/Cargo.toml
@@ -30,4 +30,4 @@ dns-lookup = "1.0"
 csv = "1.1"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
-serde_yaml = "0.8"
+serde_yaml = "0.8.4"
