roll: third_party/pigweed fd726e0..28f8cdb (2 commits)

28f8cdb:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/282772 pw_multisink: Expose underlying buffer size
9a65920:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/282773 pw_kernel: Fix deadlock writing to stdout in qemu wrapper script

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: fd726e0ef3fa05..28f8cdba9f5d7c
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8717856619554612065
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: If42f1b81321f89eb4d6296c25bb4760a5d28d901
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/283232
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Lint: Lint 🤖 <android-build-ayeaye@system.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 fd726e0..28f8cdb 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit fd726e0ef3fa059af4671bf03fff9b2afcb46a45
+Subproject commit 28f8cdba9f5d7c8c8740839dfc1f6c8e5f2310e5