[roll third_party/pigweed] pw_sync: Fix CMake yield_core target

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/79962

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: a2af8fc321c162c..cefc6a7c9b86421
Roller-URL: https://ci.chromium.org/b/8824462301236595361
Cq-Cl-Tag: roller-builder:pigweed-experimental-roller
Cq-Cl-Tag: roller-bid:8824462301236595361
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I92530c224d70dfc09457eb3f9fd7a5aa363d4357
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/79894
Bot-Commit: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
Commit-Queue: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index a2af8fc..cefc6a7 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit a2af8fc321c162cebba37bd011357b813a6d423e
+Subproject commit cefc6a7c9b86421d63037dbb8219dd2ade91293c