roll: third_party/pigweed 683ebcf..f7a18a2 (3 commits)

f7a18a2:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/251434 docs: Update changelog
5172ccd:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/251433 pw_bluetooth: Add avdtp parser fundation
e431fab:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/251332 pw_bluetooth_sapphire: Queue ISO frames in stream as needed

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 683ebcf0f57930..f7a18a2a7db736
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8729647101971877169
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I51ccb22c35e9e463adb25fb1a96eb8f07213c848
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/kudzu/+/251772
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Commit-Queue: 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 683ebcf..f7a18a2 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 683ebcf0f579306f7759002f45e1e1e65b197c33
+Subproject commit f7a18a2a7db736bd5b885e32a7976ecac8996b41