[roll third_party/pigweed] pw_cli: Requires script now pushes to 'main'

Push to 'main' instead of 'master' for the requires-helper repository.

Original-Bug: 209
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/45305

third_party/pigweed Rolled-Commits: 76cd48178dbbb9e..bc141438343ecdb
Roller-URL: https://ci.chromium.org/b/8846854077079195696
Cq-Cl-Tag: roller-builder:pigweed-experimental-roller
Cq-Cl-Tag: roller-bid:8846854077079195696
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ie9cbb4ddb58ffaf4691df23f51b78202997c7137
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/45944
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 76cd481..bc14143 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 76cd48178dbbb9e7e2dea21ff46042c52cf3dce7
+Subproject commit bc141438343ecdb5dde61df3be342cf444b45d69