config : fix cache_dir_path value parsing error

Configparser's config.get returns a string and we want a Path. for the
moment convert it to Path directly.

src/unisync/config.py

@@ -95,7 +95,7 @@ def load_config(config_path:str) -> Config:
             config.get(roots_section, "remote")
         )
     other_config = OtherConfig(
-            config.get(other_section, "cache_dir_path", fallback=DEFAULT_MISC_CACHE_DIR_PATH)
+            Path(config.get(other_section, "cache_dir_path", fallback=DEFAULT_MISC_CACHE_DIR_PATH)).expanduser()
         )
 
     args_bool = list()