[roll third_party/pigweed] pw_env_setup: Use re_client_version for RBE client

The git_revision tag may not always be unique for this package.

See also http://crbug.com/1242090.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/57980

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 43f3799b45f9981..47e8bfeb779dc3c
Roller-URL: https://ci.chromium.org/b/8838076980408378384
Cq-Cl-Tag: roller-builder:pigweed-experimental-roller
Cq-Cl-Tag: roller-bid:8838076980408378384
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I752d30eb043c3010a179ebd77741926eb1c55172
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/58021
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 43f3799..47e8bfe 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 43f3799b45f99813d9865caa540e5a0a4647f6c5
+Subproject commit 47e8bfeb779dc3c460608e40d9e804b33cf73957