[roll third_party/pigweed] roll: clang

From: git_revision:c58bc24fcf678c55b0bf522be89eff070507a005
To: git_revision:ca260e1b119b043195158098a9afda3967c6854b
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/193433
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 7e49f0b7f5e47ac..4d84f9fc0269f12
Roller-URL: https://ci.chromium.org/b/8755516365267119889
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I03d3d5f2c654fda8d966c0fbd826d24ebad6b1a6
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/193324
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index 7e49f0b..4d84f9f 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 7e49f0b7f5e47acbda94f79ba95368a25163130c
+Subproject commit 4d84f9fc0269f12c61fa539276a01e40e7bc229a