[roll third_party/pigweed] pw_bluetooth_sapphire: Stub bt-host CIPD manifest

Adds the top level target `//pw_bluetooth_sapphire/fuchsia:infra` that
will aggregate all of the info that the builder needs to build, test,
and release bt-host.

Original-Bug: 332357274, 321267610
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/201390

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: bab24b648730fc3..c3dfc3987262a43
Roller-URL: https://ci.chromium.org/b/8751642641266961761
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ie52112a04cb70d3fc0fa7d572265982f6d626964
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/quickstart/bazel/+/201810
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.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 bab24b6..c3dfc39 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit bab24b648730fc354751b13192c0a254c64b0ca3
+Subproject commit c3dfc3987262a43d6865bb435730422d0adc3644