Fix tasks.json after crossed CLs.

These two CLs caused failure on Housekeeper-PerCommit-InfraTests:
https://skia-review.googlesource.com/8839
https://skia-review.googlesource.com/8805

NOTRY=true

Change-Id: Ie27c2fd73186cdd4d9ae5528635bc9690df03210
Reviewed-on: https://skia-review.googlesource.com/8845
Reviewed-by: Eric Boren <borenet@google.com>
Commit-Queue: Ben Wagner <benjaminwagner@google.com>
1 file changed