Fix panic on 404

Signed-off-by: baalajimaestro <me@baalajimaestro.me>

src/main.rs

@@ -39,7 +39,7 @@ struct GitLabSuccessJSON {
 
 #[derive(Serialize, Deserialize)]
 struct GitLabFailedJSON {
-    errors: Option<String>,
+    errors: Option<Vec<String>>,
     message: String,
     url: String
 }