Fix Dash Table filter options position

[akksi]

Fixes plotly/dash-table#927

[alexcjohnson]

@akksi this looks great. I'm not sure what's going on with test_browser_smoke[Firefox] - all it says is
Service geckodriver unexpectedly exited. Status code was: 64
Which I don't see documented anywhere. This test runs just fine for me locally, as well as in the lint-unit-36 job, but seems to be failing repeatably in lint-unit-39.

Only thing I can think of is perhaps we're getting a new version of geckodriver that's incompatible with the version of Firefox on the test image circleci/python:3.9.2-buster-node-browsers - these images are deprecated in fact, and we really should update to the cimg series - perhaps cimg/python:3.9-browsers?

[akksi]

@alexcjohnson I could finally solve the test issue by adding webdriver-manager to browser initialization, I updated the Docker image to a newer one anyway. Looks like it's working fine now. :)

[alexcjohnson]

💃 - not sure what's up with webdriver-manager but if it works it works!