[third_party/pigweed] Roll 2 commits

e3a20766f69442f pw_bluetooth: Sync with recent APCF changes
aa6b152d30aa3cc pw_rpc: Add private method for sending internal::P

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 299330f742b9c86..e3a20766f69442f
Roller-URL: https://ci.chromium.org/b/8749187713648644401
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I582850f2d7f79c6307b12b9610f6bdc89742788a
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/207633
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 299330f..e3a2076 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 299330f742b9c867715131a59a3934fa952fbac4
+Subproject commit e3a20766f69442ffde9dbdd3610bb057981e3ff7