chore(tox): Ignore warning for minimum dependencies

Author: effigies

tox.ini

@@ -63,6 +63,7 @@ commands =
   coverage erase
   coverage run -p -m bids_validator tests/data/bids-examples/ds000117
   python -m pytest --doctest-modules --cov . --cov-append --cov-report term \
+  min: -Wignore \
     --junitxml=test-results.xml {posargs}
   coverage xml