fix(update-agent): report resumed download progress correctly (#1304)

## Summary
- Base update-agent download progress on the absolute downloaded offset
instead of the resumed loop index.
- Keeps the existing logging and DBus reporting flow, while making
resumed downloads show their real total progress.

CI failures fixed:
- Refresh Cargo.lock for current Cargo Deny RustSec advisories
(`crossbeam-epoch`, `serial_test`/`scc`).
- Refresh the update-agent QEMU test Fedora Cloud image URL after the
pinned mirror URL started returning 404.

---------

Co-authored-by: Sfikas <theodore.sfikas@toolsforhumanity.com>

Author: Qbicz

update-agent/src/component.rs

@@ -624,22 +624,12 @@ pub fn download<P: AsRef<Path>>(
     let mut current_delay = download_delay;
     let mut allowed_before = true;
 
-    let remaining_chunks =
-        ((component_remote_len - start_bytes) / CHUNK_SIZE as u64) as usize;
-
-    let mut progress_percent = 0;
     for (i, range) in
         util::HttpRangeIter::try_new(start_bytes, component_remote_len - 1, CHUNK_SIZE)?
             .enumerate()
     {
-        if let Some(current_progress_percent) = (i * 100).checked_div(remaining_chunks)
-        {
-            if progress_percent != current_progress_percent {
-                progress_percent = current_progress_percent;
-            }
-        } else {
-            progress_percent = 100;
-        }
+        let progress_percent =
+            (start_bytes + (i as u64 * CHUNK_SIZE as u64)) * 100 / component_remote_len;
 
         info!("downloading component `{name}`: {progress_percent}%");
         if let Some(iface) = update_iface

update-agent/t/qemu-runner.js

@@ -17,7 +17,7 @@ import { promises as fs, constants } from 'fs';
 import { join, resolve } from 'path';
 import { createHash } from 'crypto';
 
-const FEDORA_CLOUD_QCOW2_URL = 'https://mirror.us.mirhosting.net/fedora/linux/releases/42/Cloud/x86_64/images/Fedora-Cloud-Base-Generic-42-1.1.x86_64.qcow2';
+const FEDORA_CLOUD_QCOW2_URL = 'https://download.fedoraproject.org/pub/fedora/linux/releases/44/Cloud/x86_64/images/Fedora-Cloud-Base-Generic-44-1.7.x86_64.qcow2';
 const QEMU_MEMORY = '2G';
 const QEMU_DISK_SIZE = '64G';