Merge pull request #2489 from moj-analytical-services/ci/pytest-cov-v…

…ersion-pin

Specify version range for `pytest-cov` in CI

.github/workflows/pytest_duckdb.yml

@@ -35,7 +35,7 @@ jobs:
 
       - name: Run tests with coverage
         run: |
-          poetry add pytest-cov
+          poetry add "pytest-cov>=5.0.0"
           poetry run pytest -v --durations=0 -m "duckdb_only or core" --cov=splink --cov-report=xml --cov-report=term tests/
 
       - name: Upload coverage report