[third_party/pigweed] Roll 10 commits

a8c971304f5c6f5 zephyr: Link pw_thread.sleep with appropriate kCon
b8242a102440067 pw_allocator: Add note to AllocatorMetricProxy tes
fed83a673aa0630 pw_emu: Remove psutil dependency
8d9da580a07cba7 bazel: Remove pw_cc_library
af9badd2ffc93c0 pw_protobuf: Fully qualify message namespace
d7660411ec0d621 pw_env_setup: Use correct arch for cipd in Bazel
346402f70e8f878 bazel: Remove references to pw_cc_library
4559b52b5d2f564 pw_multibuf: Add soong support
33ff80f6cc3c02a pw_env_setup: Switch to Fuchsia ninja CIPD package
fee3e609802fe3f pw_log_zephyr: Add missing include for tokenized l

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 3887ec9bd906adf..a8c971304f5c6f5
Roller-URL: https://ci.chromium.org/b/8759753126035923697
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ic07d10e34447f6a6cf10248347991868a695dadf
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/kudzu/+/186899
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index 3887ec9..a8c9713 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 3887ec9bd906adfcb7604dce06ed22c7586aa6a3
+Subproject commit a8c971304f5c6f570a961a38549459924b7b58e0