[roll third_party/pigweed] pw_bluetooth_sapphire: Fuchsia testing support

Add support for testing on Fuchsia by performing the following:
1. Introduces the fuchsia-infra-bazel-rules repository as
   @fuchsia_infra, allowing us to use `fuchsia_test_group` to run all
   target tests under the scope of a provisioned emulator.
2. Uprrev @com_google_googletest (gtest for Bazel) to contain
   3b6d48e8d5c1d9b3f9f10ac030a94008bfaf032bb.
   This is needed to realize the upstream changes necessary to build
   gtests that run against a Fuchsia target.

Original-Bug: 331692493, 42178254
Original-Fixed: 321267689
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/198270

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 16c27d8785cb548..314a6228d8b6aa8
Roller-URL: https://ci.chromium.org/b/8752061886392018753
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ifb79225c6fbf86fa696836348f6879d6a4d7c0b1
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/quickstart/bazel/+/201005
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.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 16c27d8..314a622 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 16c27d8785cb548aa08a14dd2bd620c5006b0fb6
+Subproject commit 314a6228d8b6aa8973f0566a6ac54bd12d915bbf