roll: third_party/pigweed 2 commits

d1caa98c216d9f4 pw_build: Add optional working directory arg to Bu
74612309f33820a pw_log: Remove backend multiplexer

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 5880c31b48ea299..d1caa98c216d9f4
Roller-URL: https://ci.chromium.org/b/8744125830820384001
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I7e8d41b9a1879d804f1c632978b26f5491ecbd50
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/218235
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 5880c31..d1caa98 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 5880c31b48ea299070dd2ce244c20b2b1d9fcd4b
+Subproject commit d1caa98c216d9f423a1ba17eae2d31daa36cd861