Add release URL for Tessie updates (home-assistant#148548)

Co-authored-by: Copilot <[email protected]>

Author: robin-thoni

homeassistant/components/tessie/update.py

@@ -88,6 +88,13 @@ def update_percentage(self) -> int | None:
             return self.get("vehicle_state_software_update_install_perc")
         return None
 
+    @property
+    def release_url(self) -> str | None:
+        """URL to the full release notes of the latest version available."""
+        if self.latest_version is None:
+            return None
+        return f"https://stats.tessie.com/versions/{self.latest_version}"
+
     async def async_install(
         self, version: str | None, backup: bool, **kwargs: Any
     ) -> None:

tests/components/tessie/snapshots/test_update.ambr

@@ -45,7 +45,7 @@
       'installed_version': '2023.38.6',
       'latest_version': '2023.44.30.4',
       'release_summary': None,
-      'release_url': None,
+      'release_url': 'https://stats.tessie.com/versions/2023.44.30.4',
       'skipped_version': None,
       'supported_features': <UpdateEntityFeature: 5>,
       'title': None,