[third_party/pigweed] Roll 3 commits

387ae513b684e3c pw_cpu_exception_cortex_m: Symbolize PC and LR
3cbb8a06150d7e4 nanopb: Add option to set PB_NO_ERRMSG=1
70045e231c2b90f pw_sys_io_stm32cube: Add module

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 6069d1083e521e0..387ae513b684e3c
Roller-URL: https://ci.chromium.org/b/8828282573398086529
Cq-Cl-Tag: roller-builder:pigweed-sample-project-roller
Cq-Cl-Tag: roller-bid:8828282573398086529
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I4aa6866ff57f15cae08fd7e1db5ea31377fbb5bc
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/sample_project/+/73400
Bot-Commit: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
Commit-Queue: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index 6069d10..387ae51 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 6069d1083e521e0b60d86ebae7ee1ba812a0a14a
+Subproject commit 387ae513b684e3c9e76118c83c2223cc29596db3