deps: V8: cherry-pick 77d515484864

Original commit message:

    [riscv64] Move explicit specialization into .cc file

    Building with Gcc-10 causes error "explicit specialization in non-namespace scope".
    This change fixes it.

    Bug: v8:12649

    Change-Id: I36b2b042b336c2dfd32ba5541fdbbdb8dc8b4fd7
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3473997
    Reviewed-by: ji qiu <qiuji@iscas.ac.cn>
    Commit-Queue: ji qiu <qiuji@iscas.ac.cn>
    Cr-Commit-Position: refs/heads/main@{#79185}

Refs: v8/v8@77d5154

PR-URL: #42067
Refs: v8/v8@b663343
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Mary Marchini <oss@mmarchini.me>
Reviewed-By: Juan José Arboleda <soyjuanarbol@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Stewart X Addison <sxa@redhat.com>