[third_party/pigweed] Roll 6 commits

4f55cd893c39b21 pw_rpc_transport: Unblock sockets when stopping
5d6c8774460f969 pw_transfer: Don't "block-network" by default
8ac986c74c35d73 pw_perf_test: Rename logging event handler files
4b364904cfc955c pw_transfer: Use StatusCode in integration tests
72fbddaec144309 pw_allocator: Improve heap poisoning configuration
8c14e34c768452a SEED: Generate the SEED index table

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 764ed8f3950766c..4f55cd893c39b21
Roller-URL: https://ci.chromium.org/b/8763648797384109073
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I9930ddb8e24f266e26345bb4b754cd14fc40b41a
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/kudzu/+/182336
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index 764ed8f..4f55cd8 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 764ed8f3950766c6116d46310639b917e88ebdd1
+Subproject commit 4f55cd893c39b218b8ad116143898b0d9210a964