Replace tempdir crate with tempfile

crates/auto_update/Cargo.toml

@@ -29,4 +29,4 @@ serde.workspace = true
 serde_derive.workspace = true
 serde_json.workspace = true
 smol.workspace = true
-tempdir.workspace = true
+tempfile.workspace = true

crates/auto_update/src/auto_update.rs

@@ -291,7 +291,9 @@ impl AutoUpdater {
             cx.notify();
         })?;
 
-        let temp_dir = tempdir::TempDir::new("zed-auto-update")?;
+        let temp_dir = tempfile::Builder::new()
+            .prefix("zed-auto-update")
+            .tempdir()?;
         let dmg_path = temp_dir.path().join("Zed.dmg");
         let mount_path = temp_dir.path().join("Zed");
         let running_app_path = ZED_APP_PATH