test: e2e-fixes

[tormoseng]

Updates to the e2e-tests:

• Globally removed a11y-checks for "image-alt" (#406)
• Updated dates on future ticket (current future ticket is soon to be active)
• New paths for paymentcard icons
• New docker-image for firefox-tests

[github-actions[bot]]

Visit the preview URL for this PR (updated for commit df415bb):

https://atb-webshop-staging--pr422-tor-fix-e2e-tests-apge0fvc.web.app

_{(expires Wed, 24 Nov 2021 11:41:24 GMT)}

_{🔥 via Firebase Hosting GitHub Action 🌎}

[tormoseng]

Added more fixes to potential bugs:

• https://github.com/AtB-AS/webshop-backend/issues/23
• https://github.com/AtB-AS/webshop/issues/423

[tormoseng]

Pga feil i onboarding skippes noen steg i testene: https://github.com/AtB-AS/webshop/issues/424

[tormoseng]

Test OK: https://github.com/AtB-AS/webshop/actions/runs/1489643091