[roll third_party/pigweed] pw_tokenizer: Fixes for Zephyr log tokenization

Tokens were being pulled in final image for Zephyr builds.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/148990

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: ea55bee9faa2b0f..5f429ebf4b9fb8d
Roller-URL: https://ci.chromium.org/b/8780092098553427361
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I32fcffaaba7a11ac3bd6219759edfc6b40584026
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/149013
Bot-Commit: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
Commit-Queue: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index ea55bee..5f429eb 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit ea55bee9faa2b0f0249b3236355e6649c3e70da0
+Subproject commit 5f429ebf4b9fb8d563767febda66fac1e8d88015