roll: third_party/pigweed 0012099..85ab4d3 (7 commits)

85ab4d3:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/269792 pw_protobuf_compiler: Narrow pw_assert dep
de83b5b:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/261452 pw_assert: Mark :backend deprecated
2695a7e:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/269752 pw_bluetooth_proxy: Unregister channel before sending close event
1872404:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/269332 pw_span: Restrict span_cast<T> to one-byte types
0c58d27:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/268732 pw_multibuf: Add support for alignment to SimpleAllocator
71f9739:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/264514 pw_env_setup: Remove bazel.json
e114a96:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/269393 pw_presubmit: Update .clang-format to add newlines at the end of files

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 0012099bbb0bf7..85ab4d3a8b743a
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8722372576550419857
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I5bde81a65aa319b5fc7d48dc9f52c84863095c4a
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/269812
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index 0012099..85ab4d3 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 0012099bbb0bf7bbe26f659c6275d8df4ee009ed
+Subproject commit 85ab4d3a8b743ad537ebd6d2dbb70f8b41083bfb