roll: third_party/pigweed pw_kernel: Fix missing log statements

- Don't drop log statement if the encode buffer overflows.
- Increase encode buffer size to match the C++ default.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/278675
Presubmit-Verified: CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>
Tests-Not-Needed: Dave Roth <davidroth@google.com>
Original-Revision: 1e464ac2e81e0403ccfd95aa4bf6b21dba6c7cda

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: be9140e6534c11..1e464ac2e81e04
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8719371036359711489
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I1a85d4ca8917bba981971d2f676964971cdf4838
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/279272
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 be9140e..1e464ac 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit be9140e6534c11afa048e0200f33ae2a594222b9
+Subproject commit 1e464ac2e81e0403ccfd95aa4bf6b21dba6c7cda