[roll third_party/pigweed] roll: clang

From: git_revision:145176dc0c93566ce4aef721044d49ab8ba50f87
To: git_revision:3809e20afc68d7d03821f0ec59b928dcf9befbf4
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/212511
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: 272873750faa652..33602efe7702181
Roller-URL: https://ci.chromium.org/b/8746468208784786081
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I39960c9a8ea0c1e065921c5c2f52f26a368c851e
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/212571
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 2728737..33602ef 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 272873750faa65275e9e1a0340289c2992692cfc
+Subproject commit 33602efe7702181a3eac16e951a7e9365f3f9ca2