roll: third_party/pigweed pw_bluetooth_proxy: Migrate size reports to Bazel

Original-Bug: 388905812
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/286532
Original-Revision: ddf51544bf604bc60fe5ba26ec500d33e1b5d718

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 91fc8c4351486b..ddf51544bf604b
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8716289880635961169
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I67b84d1de59e31917564cff9d0bf18156598354d
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/286916
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index 91fc8c4..ddf5154 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 91fc8c4351486b20ff6110a8fd68157238386729
+Subproject commit ddf51544bf604bc60fe5ba26ec500d33e1b5d718