roll: third_party/pigweed 4 commits

a78709c948aa0d3 rp2040: Add rp2040_binary transition
2ae7586e1ca9644 bazel: Stop using deprecated pw_facade aliases, v3
42504afa03234e3 pw_docgen: Add bug Docutils role
3c319b21bb978db OWNERS: Add gwsq

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 67ea3940b6d3c0e..a78709c948aa0d3
Roller-URL: https://ci.chromium.org/b/8744767685876285441
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I730493826f1516fe4b0a1b91ccf86ab29575fc78
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/216791
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 67ea394..a78709c 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 67ea3940b6d3c0e78a920bf75683306763bb6530
+Subproject commit a78709c948aa0d39a1be4a8a8102204f99e2a4d2