[roll third_party/pigweed] roll: buildifier

From: version:2@5.1.0
To: version:2@6.0.0

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/126560
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed.google.com.iam.gserviceaccount.com>

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 1b3655965bcdbd3..0679364d9012abe
Roller-URL: https://ci.chromium.org/b/8791823666142923713
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ifb163bf8a7192d07d667dea0a72321f795103759
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/126563
Bot-Commit: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
Commit-Queue: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index 1b36559..0679364 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 1b3655965bcdbd386afd00cca7352c7cc6ca8ac9
+Subproject commit 0679364d9012abe79cc58244da8c23b1a977c761