roll: third_party/pigweed a2a859e..55f09ff (2 commits)

55f09ff:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/250332 pw_allocator: Fix Android.bp
8a568e4:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/250353 pw_multisink: Ignore unsigned negation sanitizer warnings

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: a2a859ecfe01fd..55f09ff7516de0
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8730709480744399345
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I83caf6f576b349ceb2213e6dbe6a15bf4e0b9413
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/250393
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 a2a859e..55f09ff 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit a2a859ecfe01fd72afc9d37d1ea41d50cbc854f3
+Subproject commit 55f09ff7516de0be1f75bf8154a9a370690f67c5