fix: Proxy URL format whithout authentication

Author: LeanderBB

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "proton-api-rs"
 authors = ["Leander Beernaert <lbb-dev@pm.me>"]
-version = "0.7.1"
+version = "0.7.2"
 edition = "2021"
 license = "AGPL-3.0-only"
 description = "Unofficial implemention of proton REST API in rust"
@@ -50,4 +50,4 @@ required-features = ["http-reqwest"]
 
 [[example]]
 name = "user_id_sync"
-required-features = ["http-ureq"]
+required-features = ["http-ureq"]

src/http/mod.rs

@@ -133,12 +133,12 @@ impl Proxy {
         };
 
         let auth = if let Some(auth) = &self.auth {
-            format!("{}:{}", auth.username, auth.password.expose_secret())
+            format!("{}:{}@", auth.username, auth.password.expose_secret())
         } else {
             String::new()
         };
 
-        format!("{protocol}://{auth}@{}:{}", self.url, self.port)
+        format!("{protocol}://{auth}{}:{}", self.url, self.port)
     }
 }