[SDK] Bumps ABI version for sdk_hash.
[SDK] Bumps ABI version for sdk_hash.

The ABI version was bumped in the first revision of the sdk_hash CL,
but was lost during a rebase:
https://dart-review.googlesource.com/c/sdk/+/152802/1

Change-Id: Ic677ada4923c92b9ad5e799e86564fffdfef0870
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/153460
Reviewed-by: Martin Kustermann <a35dd5b79fac84b2bb3b026a16b8becc55af5961@google.com>
Commit-Queue: Clement Skau <495593248b6158163719b90dde8357b589c8e5d0@google.com>

dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk