🐛 Fix fsspec imports

Author: shaneahmed

tiatoolbox/wsicore/wsireader/fsspec_json.py

@@ -7,6 +7,7 @@
 from pathlib import Path
 from typing import TYPE_CHECKING
 
+import fsspec
 import numpy as np
 import zarr
 from fsspec.implementations.reference import ReferenceFileSystem