Run webkit tests on pipeline builds

[m-akinc]

Pull Request

🤨 Rationale

Closes #990

👩‍💻 Implementation

I upstreamed a change to karma-webkit-launcher to fix our issues on Linux build machines, and now we're pulling in the fixed release.

🧪 Testing

Build runs without hanging. The validation step still takes roughly 6 minutes, even though it is running most of the nimble-components tests an additional time.

[test-concurrent:nimble-components] [test-webkit:verbose] Safari 17.0 (Linux x86_64): Executed 4595 of 4646 (skipped 51) SUCCESS (5 mins 11.218 secs / 4 mins 17.806 secs)

✅ Checklist

• I have updated the project documentation to reflect my changes or determined no changes are needed.

[m-akinc]

No real need for review from @DStavilaNI and @munteannatan -- just skipping two more wafer map tests on Webkit (I updated #2169 with the test names).