[roll third_party/pigweed] roll: gn

From: git_revision:dd0927eb34bba823ec2bcea32079c091909881d2
To: git_revision:22581fb46c0c0c9530caa67149ee4dd8811063cf
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/197213
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: ebb23ae202abf06..9269d8b8178f716
Roller-URL: https://ci.chromium.org/b/8753176253914728497
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ic33ba50c1691cbd13c9a5b77c3f0a6f83569a681
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/197310
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 ebb23ae..9269d8b 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit ebb23ae202abf069e74056c4b8efa5d56e0ee146
+Subproject commit 9269d8b8178f7169c8f3e0bc4ef64359ca6b4aa8