roll: third_party/pigweed e53e42c..3c47da4 (2 commits)

3c47da4:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/492131 pw_bluetooth_sapphire: Fix peer removal UAF in BrEdrDiscoveryManager
28a97fd:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/490552 pw_bluetooth_sapphire: Fix UAF in BrEdrDiscoveryManager callbacks

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: e53e42c6735d5d..3c47da4f3903f0
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8668703164316805281
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ie9c36b2b93b7b11cf1d33a8448353b7d15e61398
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/495353
diff --git a/third_party/pigweed b/third_party/pigweed
index e53e42c..3c47da4 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit e53e42c6735d5d52c47c7efc4f42a70355f9f503
+Subproject commit 3c47da4f3903f084e7ce0d0272930ce69460f946