deps: cherry-pick 1420e44db0 from upstream V8

Original commit message:

    [coverage] Correctly free DebugInfo in the absence of breakpoints

    It's quite possible for DebugInfos to exist without the presence of a
    bytecode array, since DebugInfos are created for all functions for which
    we have a CoverageInfo. Free such objects properly.

    Also move the corresponding deletion of CoverageInfos on unload up
    before the early exit.

    Bug: v8:6000
    Change-Id: Idde45b222290aa8b6828b61ff2251918b8ed2aed
    Reviewed-on: https://chromium-review.googlesource.com/664811


Reviewed-by: Yang Guo <yangguo@chromium.org>
    Commit-Queue: Jakob Gruber <jgruber@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#48024}

Fixes crash when passing Profiler.startPreciseCoverage before
Debug.paused is received.

PR-URL: https://github.com/nodejs/node/pull/17344
Refs: https://github.com/v8/v8/commit/1420e44db0ac3631687deb9fc6816ac97b9f499c
Refs: https://github.com/bcoe/c8/pull/6#discussion_r153121287


Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>