Fix old cache folder (#11318)

Author: Tibladar

python3/cinnamon/harvester.py

@@ -151,7 +151,7 @@ def __init__(self, spice_type):
         self.index_cache = {}
         self.cache_lock = threading.Lock()
 
-        self.cache_folder = '%s/.cinnamon/spices.cache/%s/' % (home, self.spice_type)
+        self.cache_folder = os.path.join(GLib.get_user_cache_dir(), 'cinnamon', 'spices', self.spice_type)
 
         self.index_file = os.path.join(self.cache_folder, "index.json")