roll: third_party/pigweed 49c68b8..846bb7d (7 commits)

846bb7d:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/234095 pw_async2: Expand docs with examples
94d2c39:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/237394 pw_uart_mcuxpresso: Fix disable bug
5bf0e36:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/237412 pw_bluetooth_sapphire: Document clangd configuration
ca679a2:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/236919 pw_uart_mcuxpresso: Simplify configuration struct
a4dab0b:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/230894 pw_allocator: Store TestHarness::Allocation inline
e81f65b:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/237513 pw_thread_freertos: Fix typo in tags
aaa6103:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/237592 pw_containers: Fix OOB array access in wrapped_iterator example

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 49c68b83a009bf..846bb7d3672e94
Roller-URL: https://ci.chromium.org/b/8735835526615897281
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Iced3526e584e236409c2ba9eab51cb101433f784
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/kudzu/+/237872
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Lint: Lint 🤖 <android-build-ayeaye@system.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 49c68b8..846bb7d 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 49c68b83a009bf14d2df21f4d62601e875ff198f
+Subproject commit 846bb7d3672e94c13451bec81098d3304d8395a9