[roll third_party/pigweed] pw_log: Add logging proto field for file name

Adds a file name field to the log proto so targets that do not rely on
tokenization may include file name information in log proto messages.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/77180

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: ee592559959ed84..027e4197f768faa
Roller-URL: https://ci.chromium.org/b/8825396705783298065
Cq-Cl-Tag: roller-builder:pigweed-experimental-roller
Cq-Cl-Tag: roller-bid:8825396705783298065
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I0992fe7053e0f146848cc4a2c5b10e342e3c933c
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/77749
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 ee59255..027e419 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit ee592559959ed84ae4496a325a796b9ec5f6bc8b
+Subproject commit 027e4197f768faa226684cd66ceec686c70c0ec8