roll: third_party/pigweed 47b42e6..e278ead (2 commits)

e278ead:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/251172 pw_presubmit: Add check for cc_library includes
d276762:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/251012 pw_bluetooth: Return OnceReceivers & pass by rvalue where appropriate

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 47b42e66ffd24b..e278ead3bfe136
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8730155724223017905
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I072325b5d4453f6fd4259a50002104536b31f2d6
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/251215
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 47b42e6..e278ead 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 47b42e66ffd24b1796be21426b05353783ba214e
+Subproject commit e278ead3bfe1361c3ff08e5329636a35abbcef6c