Suppress unsafe buffers warnings from the latest version of Clang

Bug: 341324165
Change-Id: I5349b163f931ba92bf01d432550f6eaae37d0528
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5615730


Owners-Override: danakj <danakj@chromium.org>
Reviewed-by: danakj <danakj@chromium.org>
Auto-Submit: Hans Wennborg <hans@chromium.org>
Commit-Queue: danakj <danakj@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1312842}