Just as with 336b352d6f, this refreshes our rate limit bypass cookie for
go.googlesource.com since the old one has apparently expired.
I did this by visiting https://go.googlesource.com/ and selecting
"Generate Password" from the top navigation. This cookie belongs to a
test account used by the Terraform team and should not be used by
non-Terraform codebases; please generate your own!
We have a generated cookie for googlesource.com so that we don't get so rate-limited when cloning Google-hosted Go libraries.
The previous credential was invalidated, so this is a newly-generated one. This credential does nothing except allow us to fetch git repositories from go.googlesource.com with a slightly-higher rate limit.
