Merge pull request #937 from e-koch/pin_zarr2

Pin zarr<3 until support for structured dtypes is provided

Author: e-koch

setup.cfg

@@ -30,11 +30,12 @@ test =
     regions>=0.7
     numpy>=1.24.0
     astropy>=5.2.1
+    zarr<3.0.0 # Unpin if updated. See issue #936
 docs =
     sphinx-astropy
     matplotlib
 noviz =
-    zarr
+    zarr<3.0.0 # Unpin if updated. See issue #936
     fsspec
     distributed
     pvextractor