Fail when working directory is not project root

[nicolasmatet]

Example setup:

/resources
    tests.py
conftest.py

tests.py uses sqlguard fixture defined in conftest.py and emit sqlalchemy query on runtime

Steps to reproduce:

cd resources
pytest

Expected behavior:

pytest is able to run tests defined in tests.py
pytest-sqlguard is able to create a query reference file tests.queries.yaml

Observed behavior:

pytest is able to run tests defined in tests.py
BUT test fail because of pytest-sqlguard with error:

 FileNotFoundError: [Errno 2] No such file or directory: 'resources/test_consumer.queries.yaml'