[roll third_party/pigweed] zephyr: Update checkout to v3.5

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/177669

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 8febfab039bf0ee..a893425653d8c93
Roller-URL: https://ci.chromium.org/b/8766234514759742609
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I3f5a5bfa5087628f4afc766fb7becb9495ddda7e
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/kudzu/+/177831
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index 8febfab..a893425 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 8febfab039bf0eeb33ae033af58155ea12a73131
+Subproject commit a893425653d8c93d03317021c89586b18ae42789