[roll pigweed] pw_presubmit: Disable msan

msan requires the C++ standard library is built from source with msan
enabled. Without this, msan will encounter false positives. This change
disables msan in pw_presubmit until this is addressed.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/108063

https://pigweed.googlesource.com/pigweed/pigweed
pigweed Rolled-Commits: 7f2f5e0c147ef49..38de4835c8b129a
Roller-URL: https://ci.chromium.org/b/8804915186703851841
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I53d79ab3c7bbb450fcd9ec82c4f08098a5f97402
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/zephyr-integration/+/108113
Bot-Commit: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
Commit-Queue: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
diff --git a/pigweed b/pigweed
index 7f2f5e0..38de483 160000
--- a/pigweed
+++ b/pigweed
@@ -1 +1 @@
-Subproject commit 7f2f5e0c147ef49de1094f40d3952ad51981b5bc
+Subproject commit 38de4835c8b129a7f6956e2c3ca609acbd9bceba