Broken tests of test-runner-browserstack and test-runner-saucelabs #3115

The tests of test-runner-browserstack and test-runner-saucelabs also fail in the pipeline due to a lack of auth.
https://github.com/modernweb-dev/web/actions/runs/27695128041/job/81916155080?pr=3099

I will disable them again now by removing "test:node". Looks like it's an issue since a long time ago, in general these packages were not tested for a long time and we need to look into solving it.