[third_party/pigweed] Roll 2 commits

c8b939009be35f9 Remove absolute paths from build command lines
8e32da710ccc876 pw_tokenizer: List the setup.py in a BUILD.gn

third_party/pigweed Rolled-Commits: 2f77d1879b2e398..c8b939009be35f9
Roller-URL: https://ci.chromium.org/b/8844875745674088080
Cq-Cl-Tag: roller-builder:pigweed-experimental-roller
Cq-Cl-Tag: roller-bid:8844875745674088080
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: If1f69adaec24ed8820d4278cd879144ac49e3544
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/48501
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 2f77d18..c8b9390 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 2f77d1879b2e3987b212a23dd0741e0e21bceccd
+Subproject commit c8b939009be35f93c9781796a8f4fef18dc4c1df