[roll third_party/pigweed] roll: cmake

From: version:2@3.27.9.chromium.8
To: version:2@3.28.1.chromium.8
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/185330
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 8d60197f7388252..8f8bd1f77b4edad
Roller-URL: https://ci.chromium.org/b/8760748120289506689
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I63db12e5497ee1654358bb7a911862da6de741db
Reviewed-on: https://pigweed-review.googlesource.com/c/gonk/+/186090
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index 8d60197..8f8bd1f 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 8d60197f7388252401668dfbe66bcd952ef177e1
+Subproject commit 8f8bd1f77b4edad346144214e503f86fe8793b6a