updata: fix fetching max version in remove-update

- When running the remove-update command it would report the max version
available in the manifest. But it is checking the wrong order so that
the latest version is not correctly reported. This is a simple fix for
that.

Signed-off-by: Yutong Sun <[email protected]>

Author: ytsssun

sources/updater/updog/src/bin/updata.rs

@@ -118,7 +118,7 @@ impl RemoveUpdateArgs {
         });
         // Note: We don't revert the maximum version on removal
         update_metadata::write_file(&self.file, &manifest)?;
-        if let Some(current) = manifest.updates.first() {
+        if let Some(current) = manifest.updates.last() {
             info!(
                 "Update {}-{}-{} removed. Current maximum version: {}",
                 self.arch, self.variant, self.image_version, current.version