roll: third_party/pigweed: pw_bluetooth_sapphire: --config=fuchsia backends

Allow fuchsia-specific backends to be configured via --config=fuchsia.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/231791

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: fe1f42f752f6a84..8fa1385bbd2cacb
Roller-URL: https://ci.chromium.org/b/8738489961372203969
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I8a44213c2bcad3fcf9dbd75f64b095edbc5b7192
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/232097
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index fe1f42f..8fa1385 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit fe1f42f752f6a847fe342a35b4c2c27fd5649fbd
+Subproject commit 8fa1385bbd2cacbbe0ea69db0bb7e3339623e1ec