Run tests against both OpenAI library versions, refs #325

.github/workflows/test.yml

@@ -12,6 +12,7 @@ jobs:
       matrix:
         python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
         pydantic: ["==1.10.2", ">=2.0.0"]
+        openai: ["<1.0", ">=1.0"]
     steps:
     - uses: actions/checkout@v3
     - name: Set up Python ${{ matrix.python-version }}
@@ -24,6 +25,7 @@ jobs:
       run: |
         pip install -e '.[test]'
         pip install pydantic${{ matrix.pydantic }}
+        pip install openai${{ matrix.openai }}
     - name: Run tests
       run: |
         pytest