[roll third_party/pigweed] roll: rbe-client

From: git_revision:caaa2651c667e0aa88aa25a36ccf1fe8e9076102
To: git_revision:3e223d5a6b8726f7ced2fcc63707853f4cbf6f48

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/48740

third_party/pigweed Rolled-Commits: 626a9b8e988ef9f..31fb47d0b11763e
Roller-URL: https://ci.chromium.org/b/8844598994495221168
Cq-Cl-Tag: roller-builder:pigweed-experimental-roller
Cq-Cl-Tag: roller-bid:8844598994495221168
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I4750d1c48055faf000812ae71910ef1641eac4ce
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/48742
Reviewed-by: 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 626a9b8..31fb47d 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 626a9b8e988ef9f1bb1c5bc809a3490f96caf86c
+Subproject commit 31fb47d0b11763e58376e7c37fbcd4ec85981b9d