[third_party/pigweed] Roll 2 commits

3748e2fb825e6d0 pw_web_ui: Add color theme
eab2b578095657c pw_web_ui: Improve logging

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: c870070bc755f7b..3748e2fb825e6d0
Roller-URL: https://ci.chromium.org/b/8828543876173518289
Cq-Cl-Tag: roller-builder:pigweed-sample-project-roller
Cq-Cl-Tag: roller-bid:8828543876173518289
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I6e6602afa7e51879e29c4bf82b54b57233dfecab
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/sample_project/+/72600
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 c870070..3748e2f 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit c870070bc755f7bd82f9669c50d5c1b3880d2101
+Subproject commit 3748e2fb825e6d02379d50f2e92df403cda9a1a9