intel_sync_upstream: Skip pushing to the staging/ branch

BUG=b:424692179
TEST=Able to push fsp/edk2/edk2-platforms to main w/o pushing to the
staging branch.

Change-Id: I897e8895f80ae7ed387c283e24e79874126e8c51
Signed-off-by: Pranava Y N <pranavayn@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/6764268
Reviewed-by: Subrata Banik <subratabanik@chromium.org>
Reviewed-by: Karthikeyan Ramasubramanian <kramasub@google.com>
1 file changed