roll: third_party/pigweed 4014763..76e4c2b (3 commits)

76e4c2b:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/270852 pw_bluetooth_sapphire: Set role for bt-host main thread
98c880b:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/270753 pw_spi_mcuxpresso: responder: Use span_cast
978718e:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/269673 pw_bluetooth_sapphire: Set BoringSSL as AES backend

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 4014763574309a..76e4c2bf7deb1e
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8722015605976978225
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I88da9d9b5b1f1df508635767ff0f3b3976ab29ef
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/270795
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
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 4014763..76e4c2b 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 4014763574309a42001d6e5feacb544061711fb9
+Subproject commit 76e4c2bf7deb1e2894e8a27bb1c6797752c1c489