docs(CHANGES) Note version() returning Version

Author: tony

CHANGES

@@ -18,7 +18,8 @@ $ pip install --user --upgrade --pre libvcs
 - Add `GitVersionInfo` dataclass and `build_options()` method to `Git` class to
   provide structured access to git version information, making version handling more homogeneous
   and type-safe (#491). The `version()` method now returns a `Version` object instead of a string.
-  This allows for more reliable version parsing and comparison.
+  This allows for more reliable version parsing and comparison, while `GitSync.get_git_version()`
+  continues to return a string for backward compatibility.
 
 ### Development