[roll third_party/pigweed] Update rules_proto_grpc to latest release

1.0.2 > 3.1.1
https://github.com/rules-proto-grpc/rules_proto_grpc/releases

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/57345

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 5125e75d5cbf725..27ab4e1e03f5f8e
Roller-URL: https://ci.chromium.org/b/8838609860139849937
Cq-Cl-Tag: roller-builder:pigweed-experimental-roller
Cq-Cl-Tag: roller-bid:8838609860139849937
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Iaab437a6432fc6c1bca129854d78920a2dcbfbff
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/57540
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 5125e75..27ab4e1 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 5125e75d5cbf725854911f8431954caa1fae6e2b
+Subproject commit 27ab4e1e03f5f8e5a370d84d830191bf6bd277dc