Fix: Disable coverage collection for doctests and extra tests

Author: drbenvincent

.github/workflows/ci.yml

@@ -24,9 +24,9 @@ jobs:
       - name: Setup environment
         run: pip install -e .[test]
       - name: Run doctests
-        run: pytest --doctest-modules --ignore=causalpy/tests/ causalpy/ --config-file=causalpy/tests/conftest.py
+        run: pytest --doctest-modules --ignore=causalpy/tests/ causalpy/ --config-file=causalpy/tests/conftest.py --no-cov
       - name: Run extra tests
-        run: pytest docs/source/.codespell/test_notebook_to_markdown.py
+        run: pytest docs/source/.codespell/test_notebook_to_markdown.py --no-cov
       - name: Run tests
         run: pytest --cov-report=xml --no-cov-on-fail
       - name: Check codespell for notebooks