Update release job.

Author: aliddell

.github/workflows/release.yml

@@ -85,7 +85,7 @@ jobs:
       - name: Install test dependencies
         run: |
           python -m pip install --upgrade pip
-          python -m pip install pytest pytest-cov tifffile zarr dask ome-zarr dotenv
+          python -m pip install pytest pytest-cov tifffile zarr dask ome-zarr python-dotenv
 
       - name: Install Acquire (Windows)
         if: matrix.platform == 'windows-latest'