[roll third_party/pigweed] pw_env_setup: clang

From: git_revision:b81bb0e1d0acc3db64557ed699ccba751b8b511a
To: git_revision:8ccf1c117b0dc08f7e9c24fe98f45ebe32e95cd1

Original-Bug: b/333448202
Docs: N/A
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/202591

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: c0fdef4a7e8c34c..0f2396924cd89a6
Roller-URL: https://ci.chromium.org/b/8750354795968258753
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I2f667ac3276d5364a7dafe7803e4a5d31ee6006c
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/204390
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 c0fdef4..0f23969 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit c0fdef4a7e8c34ce1fa3f79f30f3865c05cd81f4
+Subproject commit 0f2396924cd89a6feb1b7317f1635b423e55f364