use the correct version of the framework for the engine tests

fixes: https://github.com/flutter/flutter/issues/67091

Change-Id: I150d6b507f85ca2e6b1785d81feeafaa47dad6f9
Reviewed-on: https://flutter-review.googlesource.com/c/recipes/+/6900
Reviewed-by: Christopher Fujino <fujino@google.com>
Commit-Queue: Nurhan Turgut <nurhan@google.com>