deps: V8: backport a4545db

Original commit message:

    FreeBSD update of process library mapping listing.

    Not best to rely on /proc presence basically when
    the linux compatibily layer is enabled so
    going through more programmatically.

    Change-Id: Ida4973f9da6dec6e9caa6e419f3612ec5ef95048
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1710664


Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
    Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#65442}

PR-URL: https://github.com/nodejs/node/pull/31127
Refs: https://github.com/v8/v8/commit/a4545db74e5204125033ccec7294d1b0a8d96389


Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>