roll: third_party/pigweed 6be7bf4..dcd8f58 (2 commits)

dcd8f58:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/268032 CMake: Set policy to silence warnings in pw_parse_arguments_strict
434a4ff:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/255772 pw_build_mcuxpresso: Add readme generation support

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 6be7bf4b4e21f0..dcd8f58642de6f
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8722558102006030977
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Iaaec37b06fee60f6810b7fc90b57b149d74eaa92
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/268854
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Bot-Commit: 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 6be7bf4..dcd8f58 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 6be7bf4b4e21f021ac78410718bc9462368fa24b
+Subproject commit dcd8f58642de6f05229502af7fe18af522a69292