roll: third_party/pigweed Reland "docs: Build module docs with Bazel"

This is a reland of commit 5436d1039850f080d8c67f0ca192d72f70bf5041

Original change's description:
> docs: Build module docs with Bazel
>
> Original-Bug: 318892911
> Change-Id: I0bff10bf25435c79707eb15a2e81bd52081ef517
> Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/248014
> Docs-Not-Needed: Kayce Basques <kayce@google.com>
> Reviewed-by: Alexei Frolov <frolv@google.com>
> Commit-Queue: Kayce Basques <kayce@google.com>

Original-Bug: 318892911
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/251812
Presubmit-Verified: CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>
Original-Revision: c15953e4b52325db4bba28cfa33a1fcd7bff3ad1

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 36e5cc3cd79e01..c15953e4b52325
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8728988787390400193
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I5dd80d182bc94f056201de939616d2095e3dcb34
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/253256
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 36e5cc3..c15953e 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 36e5cc3cd79e01b178b9ec9236749be5007860b7
+Subproject commit c15953e4b52325db4bba28cfa33a1fcd7bff3ad1