roll: third_party/pigweed 3 commits

97bdfeb645a92f7 pw_bluetooth_sapphire: Fix conversions from iterat
2a5f339c40c1236 pw_bluetooth_sapphire: Add bt-host Bazel tests
fb0067fff348563 pw_bluetooth_sapphire: Low energy advertiser gener

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: d55ec9627e60afd..97bdfeb645a92f7
Roller-URL: https://ci.chromium.org/b/8742552406823781729
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I6572fdeb4161a8f6c591a471544c134faa1dc15f
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/222860
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Lint: Lint 🤖 <android-build-ayeaye@system.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 d55ec96..97bdfeb 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit d55ec9627e60afd1d592a1bb1d93e8ce091d565b
+Subproject commit 97bdfeb645a92f7d8a92d5ee0bddac90fa7f2e1b