feat: add tested dependency updates with runtime rollback

jr_einvoice/setup.py

@@ -34,7 +34,7 @@ def get_latest_mustang_version(logger) -> str:
         with urllib.request.urlopen(url, timeout=30) as r:
             xml_data = r.read()
         root = ET.fromstring(xml_data)
-        latest = root.findtext("./versioning/latest") or root.findtext("./versioning/release")
+        latest = root.findtext("./versioning/release") or root.findtext("./versioning/latest")
         if not latest:
             # fallback: last version in versions list
             versions = [v.text for v in root.findall("./versioning/versions/version") if v.text]