Dependency Update

Updated deps and added serialize for the structs

backend/src/models.rs

@@ -1,6 +1,6 @@
 use serde::{Deserialize, Serialize};
 
-#[derive(Clone, Debug, PartialEq, Deserialize)]
+#[derive(Clone, Debug, PartialEq, Deserialize, Serialize)]
 pub enum category {
     WhiteboardBeamer,
     Internet,
@@ -10,7 +10,7 @@ pub enum category {
     Sonstiges,
 }
 
-#[derive(Deserialize, Clone, PartialEq, Debug)]
+#[derive(Deserialize, Serialize, PartialEq, Debug)]
 pub struct ticket {
     pub id: i32,
     pub category: category,
@@ -21,7 +21,7 @@ pub struct ticket {
     pub user_id: i16,
 }
 
-#[derive(Deserialize, Clone, PartialEq, Debug)]
+#[derive(Deserialize, Serialize, PartialEq, Debug)]
 pub struct user {
     pub id: i16,
     pub first_name: String,