[roll third_party/pigweed] pw_thread: Make snapshot logs debug level

Changes logs during snapshot capture to be at debug level as they're
quite verbose and can quickly flood log buffers.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/56927

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: cf43bbf559ef512..e5a5f380c4be312
Roller-URL: https://ci.chromium.org/b/8838977889520879841
Cq-Cl-Tag: roller-builder:pigweed-experimental-roller
Cq-Cl-Tag: roller-bid:8838977889520879841
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I51aa60556a6489753f7d972aeb2831d5c803cf1d
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/57083
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 cf43bbf..e5a5f38 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit cf43bbf559ef5125a1358c382d0c4c36e4bf8817
+Subproject commit e5a5f380c4be312401457ba642d298c75045feca