roll: third_party/pigweed 96f941b..475ef28 (3 commits)

475ef28:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/253192 gn: Fix error reported by GN linter
ce0aa60:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/254214 pw_grpc: Handle large ignored frames
a2f2425:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/254213 pw_grpc: Fix a few deadlocks in error handling

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 96f941bde9f644..475ef28711ff61
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8728640554111872193
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I7111374bbf52ef5bb2a0bdc7d0038c2f6fb37846
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/kudzu/+/254326
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Commit-Queue: 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 96f941b..475ef28 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 96f941bde9f6444a1d3d0195a97d870fa14e26dd
+Subproject commit 475ef28711ff616df5412358398f30d2294f2277