deps: backport 39642fa from upstream V8

This is an almost clean cherry-pick of the original commit. The only
conflict was related to a rename of an internal class.

Original commit message:

    [async-await] (simpler) fix for Return in try/finally in async functions

    Alternative approach to https://codereview.chromium.org/2667983004/, which
    does not depend on implicit control flow changes from
    https://codereview.chromium.org/2664083002

    - Remove handling for `async function` from Parser::RewriteReturn(). This functionality
    is moved to BytecodeGenerator::BuildAsyncReturn(). This ensures that promise resolution
    is deferred until all finally blocks are evaluated fully.

    - Add a new deferred command (CMD_ASYNC_RETURN), which instructs ControlScope to
    generate return code using BuildAsyncReturn rather than BuildReturn.

    - Parser has a new `NewReturnStatement()` helper which determines what type of return
    statement to generate based on the type of function.

    BUG=v8:5896, v8:4483
    R=littledan@chromium.org, neis@chromium.org, rmcilroy@chromium.org, adamk@chromium.org, gsathya@chromium.org

    Review-Url: https://codereview.chromium.org/2685683002
    Cr-Commit-Position: refs/heads/master@{#43104}

Fixes: https://github.com/nodejs/node/issues/11960
PR-URL: https://github.com/nodejs/node/pull/11752
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>

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