[roll third_party/pigweed] roll: gn

From: git_revision:b0c2742896b6b9f869dc0eb35ae4785cbf2a4512
To: git_revision:df98b86690c83b81aedc909ded18857296406159
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/210436
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 19c5ce1182033b6..49dd44fcb1a0b68
Roller-URL: https://ci.chromium.org/b/8747472801052068753
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I57e0f4bcb2fd30e98ea19caf2653700fd90fc3a8
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/quickstart/bazel/+/210473
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index 19c5ce1..49dd44f 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 19c5ce1182033b604e1123a016a768660c1e6e50
+Subproject commit 49dd44fcb1a0b68617329ac8c8c394c9255b12a7