[infra] Update go.sum

I didn't follow all of the necessary steps in
https://skia-review.googlesource.com/c/skia/+/279038

Change-Id: I4210b09025f5c32664c81a1f3f6c51310b904589
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/279044
Reviewed-by: Ravi Mistry <rmistry@google.com>
Commit-Queue: Eric Boren <borenet@google.com>
1 file changed