fix: install pytest and hypothesis explicitly in CI — not pulled in without blob extra

Author: Douglas Jones

.github/workflows/ci.yml

@@ -25,7 +25,7 @@ jobs:
           python-version: ${{ matrix.python-version }}
 
       - name: Install package
-        run: pip install -e "."
+        run: pip install -e "." pytest hypothesis
 
       - name: Run test suite
         run: python3 -m pytest tests/ -q --tb=short