AUTHORS check: Allow service accounts from skia-swarming-bots

Bug: skia:7833, skia:7050
Change-Id: Id5b3fdd1b0a4ae50fce7a5d1212c744a85274012
Reviewed-on: https://skia-review.googlesource.com/123936
Reviewed-by: Ravi Mistry <rmistry@google.com>
Commit-Queue: Eric Boren <borenet@google.com>
1 file changed