roll: third_party/pigweed: pw_bluetooth_sapphire: Embossify ReadSimplePairingModeReturnParams

Use emboss definitions instead of a packed struct for generating a
Read Simple Pairing Mode command complete event.

Original-Bug: b/42167863
Test: fx test //src/connectivity/bluetooth/core/bt-host
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1108733
GitOrigin-RevId: 10e3076c077c8fdac42b9327e53b2120d3bcd4ce
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/232755

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 2a2c2ad3be8241c..7286a9d4c200a46
Roller-URL: https://ci.chromium.org/b/8738111880830153233
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Idd670b9fcc70e7bc8707cf15aba6f5dc0fc476e9
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/233005
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Lint: Lint 🤖 <android-build-ayeaye@system.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 2a2c2ad..7286a9d 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 2a2c2ad3be8241cc8145e8474fb9dad0df9be91a
+Subproject commit 7286a9d4c200a46bcb04c687afb542cc3afc66cc