roll: third_party/pigweed 9446328..c650ea7 (2 commits)

c650ea7:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/263096 build: Use -Oz for Rust toolchains with prebuilt targets
702dd6b:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/263252 pw_thread: Remove bad defaults

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 9446328fbf0968..c650ea722061f8
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8724379184960314689
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I7a12068f27396f5d3814541e93af63e29d64ce19
Reviewed-on: https://pigweed-review.googlesource.com/c/gonk/+/263432
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 9446328..c650ea7 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 9446328fbf096818e083169147958dadfc3fa06d
+Subproject commit c650ea722061f83b07d23b4b24fd2fc90f18a6f3