[fuchsia] Fix recipe with latest SDK version path

The test runner needs to be updated to fix the
test step failure.

Bug: https://github.com/flutter/flutter/issues/57044
Test: https://chromium-swarm.appspot.com/task?id=4e3c619c87fedf10
Test: Added GenTest for cipd
Change-Id: I285b3c25807f03a8ee83b94c13f8fb569311f96f
Reviewed-on: https://flutter-review.googlesource.com/c/recipes/+/5940
Reviewed-by: Godofredo Contreras <godofredoc@google.com>
Commit-Queue: Casey Hillers <chillers@google.com>