roll: third_party/pigweed 4781df4..29628d5 (2 commits)

29628d5:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/323913 pw_protobuf: Add missing Soong public dep
4df7065:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/323894 pw_multibuf: Fix invisible typo in sphinx ref names

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 4781df4b699f25..29628d51530627
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8703266000720237297
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Icc0438b6854b55bc58c55edaf8f657c04fab1625
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/kudzu/+/324018
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 4781df4..29628d5 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 4781df4b699f255cc91832690f5844e640e84c11
+Subproject commit 29628d5153062726581531dddf1daf3c07a4c43f