Release 2295
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Changes proposed in this pull request
For easier troubleshooting, we want to be able to run Capybara tests in headed mode.
Add an environment variable SELENIUM_CHROME_DRIVER which will configure Capybara to use the default selenium_chrome config.
Because .env.local doesn't override the test environment, SELENIUM_CHROME_DRIVER will need to be set in .env.test.local.
This also removes the deprecated options parameter for driver initialisation.