roll: third_party/pigweed pw_sync: Add timed threaded testing

Original-Bug: 235284163
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/290584
Original-Revision: 3be1c116149fb281d5a8606b27ba4232ddcda174

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: f4b9f07df2a877..3be1c116149fb2
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8708404869185619537
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I8bea3a9199c12d99a65e8ec7ee0aabc7406d7638
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/307920
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
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 f4b9f07..3be1c11 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit f4b9f07df2a877501801bb24ecc7a9d5ef9549be
+Subproject commit 3be1c116149fb281d5a8606b27ba4232ddcda174