Point ct_skps.py recipe to new SKP repository

Bug: skia:7463
Change-Id: I5dd17a5ba33f867346837f006f9dc4cb775cfa04
Reviewed-on: https://skia-review.googlesource.com/91960
Reviewed-by: Eric Boren <borenet@google.com>
Commit-Queue: Ravi Mistry <rmistry@google.com>
13 files changed