roll: third_party/pigweed cc438c5..6fd4792 (3 commits)

6fd4792:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/245254 pw_allocator: Make pw::Allocator::as_pmr optional
e7623c7:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/245116 pw_bluetooth_sapphire: Remove assert message in DynamicPacket
f6da760:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/245753 pw_bytes: Revert moving to whole_static_libs in Android.bp

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: cc438c56c653e5..6fd4792308999b
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8732529022922920625
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I6685d6f00e3d4fd2e38cb8e0cf1b26bf34c63862
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/245892
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 cc438c5..6fd4792 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit cc438c56c653e563b3a76e9443b0704f14cb9441
+Subproject commit 6fd4792308999b9c5949e9b778994d064a80a8b7