[third_party/pigweed] Roll 2 commits

3be460dda292cf4 pw_rpc: Don't respond to error messages
baf2fdc34ff37cf pw_sync: adds VirtualBasicLockable interface

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 3787c625ef60d64..3be460dda292cf4
Roller-URL: https://ci.chromium.org/b/8836444911662250625
Cq-Cl-Tag: roller-builder:pigweed-sample-project-roller
Cq-Cl-Tag: roller-bid:8836444911662250625
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I8143c55be49ea9a4ffcc788f4f407a03155584a0
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/sample_project/+/60486
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 3787c62..3be460d 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 3787c625ef60d64e8017ff2d4e212a87be150dff
+Subproject commit 3be460dda292cf4dff1a3ad3fa4bf712f111afd4