Remove bsddb3

Author: dstansby

.github/workflows/python-package.yml

@@ -50,7 +50,7 @@ jobs:
     - name: Create Conda environment with the rights deps
       shell: "bash -l {0}"
       run: |
-        conda create -n zarr-env python==${{matrix.python-version}} bsddb3 pip nodejs
+        conda create -n zarr-env python==${{matrix.python-version}} pip nodejs
         conda activate zarr-env
         npm install -g azurite
     - name: Install dependencies

docs/release.rst

@@ -30,6 +30,8 @@ Enhancements
 Maintenance
 ~~~~~~~~~~~
 * Dropped support for Python 3.10.
+* Removed testing for compatibility with the ``bsddb3`` package.
+  ``bsddb3`` was last released four years ago.
 
 Deprecations
 ~~~~~~~~~~~~