[roll third_party/pigweed] pw_string: Update expected compilation failure message

Original-Bug: b/239856986
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/111592

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 732a16f236b6aee..f3c602a7f06f3e5
Roller-URL: https://ci.chromium.org/b/8802215723262885409
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ided2df5b18d07697d0a25b33106819422b4cafa3
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/111730
Commit-Queue: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
Bot-Commit: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index 732a16f..f3c602a 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 732a16f236b6aee22f564f43f69f730ab74aed78
+Subproject commit f3c602a7f06f3e5a269fd3e9fd9a52d119ec1df3