[roll third_party/pigweed] pw_doctor: Improve deleted file error message

Previously the user just got an exception.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/97740

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 688f8036f03fbcc..271e79b0166e468
Roller-URL: https://ci.chromium.org/b/8811684841353288369
Cq-Cl-Tag: roller-builder:pigweed-experimental-roller
Cq-Cl-Tag: roller-bid:8811684841353288369
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I4d74ab023628f705cbd7e3080ea3b31eea27b351
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/97821
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 688f803..271e79b 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 688f8036f03fbcc1d6124dfc1e64c123cb78e133
+Subproject commit 271e79b0166e468fa61d569e5062507d17e0f325