roll: third_party/pigweed: pw_bluetooth_sapphire: Add l2cap Bazel unit test target

Original-Bug: b/359241441
Test: bazel test //pw_bluetooth_sapphire/host/...
      --platforms=//pw_unit_test:googletest_platform
      --@pigweed//pw_unit_test:backend=@pigweed//pw_unit_test:googletest
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/234055

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 0704d81595a7d7b..00faa5bb544b18b
Roller-URL: https://ci.chromium.org/b/8737677258356941057
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I6a1a8181e7a6a57d6da64924f1c495b1503e0dfa
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/233979
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 0704d81..00faa5b 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 0704d81595a7d7b47aa8078bf4b4bb5d998dea9b
+Subproject commit 00faa5bb544b18ba6dc267c34269d8a8cc4e5591