roll: third_party/pigweed a82ae0c..294d431 (6 commits)

294d431:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/472185 pw_bluetooth_proxy: Support loopback mode in CommandMultiplexer
7b8f882:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/464845 pw_build: Define sharded kernel_host and kernel_device workflow groups
9009709:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/472345 pw_i2c_zephyr: Add initiator bazel target
d7dbc70:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/455906 pw_kernel: Program the VeeR MEIVT redirect table
b05f4bc:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/472186 pw_async2: Add ValueFuture::Cancel; fix destruction race
f47827e:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/468005 pw_protobuf: Fix code generation for "tag".

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: a82ae0c83869a9..294d431a761dc4
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8671160466768984097
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I041f94dbca2f9bf9b5493b0cd0fe3bc7380094b5
Reviewed-on: https://pigweed-review.googlesource.com/c/gonk/+/472805
diff --git a/third_party/pigweed b/third_party/pigweed
index a82ae0c..294d431 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit a82ae0c83869a98d2295d8e8a00d4380ab8b886a
+Subproject commit 294d431a761dc44fe07710c15d5ac1603f7ef7bf