[roll third_party/pigweed] SEED-0106: Claim SEED number

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/155392

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 7834d83c09d9b1d..b7fb6ab2b7b0b9b
Roller-URL: https://ci.chromium.org/b/8775644850078149281
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ib88b6fab28c470cdd7e719fe2de98ac1a482496f
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/155510
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index 7834d83..b7fb6ab 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 7834d83c09d9b1d275b431525846557809c66c48
+Subproject commit b7fb6ab2b7b0b9b36e81cb3d9ba6b55e41624ebc