roll: third_party/pigweed pw_env_setup: Redirect pigweed_environment.gni to file in env dir

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/309893
Presubmit-Verified: CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>
Original-Revision: f6e3cade7bee14859784b681fe2b7046b9f0c385

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 57f5fb8ce6063b..f6e3cade7bee14
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8704552867926288241
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ibd9e0485d1fea06a2c6f3a96e0eadc37eaf4d0ce
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/320172
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index 57f5fb8..f6e3cad 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 57f5fb8ce6063b7ff4fc54a045032510ee5f76fe
+Subproject commit f6e3cade7bee14859784b681fe2b7046b9f0c385