[roll third_party/pigweed] roll: gn

From: git_revision:a2e2717ea670249a34b0de4b3e54f268d320bdfa
To: git_revision:0a2b8eac80f164f10b2cbc126890db0d295790cd
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/193050
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 4b5dc0535d75ca1..6532d77de01bf38
Roller-URL: https://ci.chromium.org/b/8755720584278457281
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I49a29ea3bf895724461f5744757c67de511186c5
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/193110
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 4b5dc05..6532d77 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 4b5dc0535d75ca150d5d30b4fc1f8f8e919ccf6d
+Subproject commit 6532d77de01bf3809ed41534e609802198e84dca