roll: pigweed 257025a..be9140e (5 commits)

be9140e:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/278872 pw_build: Use --output_base for build_dir
7d91dfc:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/278676 pw_kernel: Use clang toolchain cortex-m builds
a9c1069:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/278674 pw_tokenizer: Encode u8 as varint in rust tokenizer
8f6c6b4:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/278492 pw_kernel: Always compiler fence when dropping interrupt guard
5b78009:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/276112 pw_kernel: Basic implementation for riscv32

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 257025af3a6a0e..be9140e6534c11
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8719383455015071969
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ic92719166a3e2b958533e2c7b9dc5ccae2a0a3ff
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/showcase/sense/+/279132
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
diff --git a/MODULE.bazel b/MODULE.bazel
index d2396d2..d66fca6 100644
--- a/MODULE.bazel
+++ b/MODULE.bazel
@@ -42,8 +42,8 @@
     module_name = "pigweed",
     # ROLL: Warning: this entry is automatically updated.
     # ROLL: Last updated 2025-03-25.
-    # ROLL: By https://cr-buildbucket.appspot.com/build/8719394309533653153.
-    commit = "257025af3a6a0ee36ff4ec9da322e6d8c5d5e66f",
+    # ROLL: By https://cr-buildbucket.appspot.com/build/8719383455015071969.
+    commit = "be9140e6534c11afa048e0200f33ae2a594222b9",
     remote = "https://pigweed.googlesource.com/pigweed/pigweed",
 )