roll: third_party/pigweed 8fb97ee..9c37b72 (4 commits)

9c37b72:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/236262 pw_tokenizer: Add support for tokenizing enums
f316527:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/242716 pw_env_setup: Move pip lock file exports
03c2d2b:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/243033 pw_env_setup: Add type annotations to config_file.py
c460937:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/243034 pw_bluetooth_sapphire: Upgrade socket relay failures to WARN

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 8fb97eed8bbd86..9c37b722d9a807
Roll-Count: 1
Roller-URL: https://ci.chromium.org/b/8733783490304917553
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I46e619be8e08df539676dc605ef5a953bed8cfdd
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/243112
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 8fb97ee..9c37b72 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 8fb97eed8bbd86b49231522e4dbb790ec5680577
+Subproject commit 9c37b722d9a807222c289069967222166c8613f5