dont install zarr python 3 in workflows running 3.10

Author: mpiannucci

.github/workflows/ci.yaml

@@ -64,6 +64,7 @@ jobs:
           python -m pip install -v -e .[test,test_extras,msgpack,pcodec]
 
       - name: Install zarr-python
+        if : matrix.python-version != '3.10'
         shell: "bash -l {0}"
         run: |
           conda activate env