[Infra] Fix revision in upload_skiaserve

Bug: skia:7399
Change-Id: I44b9ed895b0a0fccb08eecec1dc20d386c90c883
Reviewed-on: https://skia-review.googlesource.com/84280
Reviewed-by: Ravi Mistry <rmistry@google.com>
Commit-Queue: Ravi Mistry <rmistry@google.com>
2 files changed