test(scratch): os.utime follow_symlinks is POSIX-only — guard it so the worktree test can age its tree on Windows too

tests/test_scratch_dir.py

@@ -381,7 +381,11 @@ def test_prune_releases_git_worktree_registration_of_idle_entry(tmp_path):
     ancient = time.time() - 30 * 3600
     for dirpath, dirnames, filenames in os.walk(tree.parent):
         for name in dirnames + filenames:
-            os.utime(os.path.join(dirpath, name), (ancient, ancient), follow_symlinks=False)
+            try:
+                os.utime(os.path.join(dirpath, name), (ancient, ancient), follow_symlinks=False)
+            except NotImplementedError:
+                # Windows: os.utime has no follow_symlinks parameter.
+                os.utime(os.path.join(dirpath, name), (ancient, ancient))
     os.utime(tree.parent, (ancient, ancient))
     assert prune_scratch_dir(scratch) == 1
     listing = subprocess.run(["git", "worktree", "list", "--porcelain"], cwd=repo, capture_output=True,