pin pymongo version for #62

Author: davidlatwe

.github/workflows/python-package.yml

@@ -45,7 +45,7 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        python -m pip install codespell flake8 lmdb pymongo pytest
+        python -m pip install codespell flake8 lmdb pymongo==3.11.3 pytest
 
     - name: Lint with flake8
       run: |