CI: Safari action fails / times out

[danleh]

Seems to fail at the Run Tag No Prefetch step (https://github.com/WebKit/JetStream/actions/runs/16938752957/job/48001826431?pr=130#step:8:26)

@camillobruni possibly related to #70?

[danleh]

I just reran a Safari action that failed earlier, but it unfortunately still timeouts in the Run Tag No Prefetch step, even after the selenium update. See https://github.com/WebKit/JetStream/actions/runs/16961643236/job/48080201728