Replace asciidoctor dependency by @asciidoctor/core

[ggrossetie]

The asciidoctor package is a meta-package that contains both @asciidoctor/core and @asciidoctor/cli. Since we do not use the Asciidoctor.js Command-Line Interface, we should replace the dependency in the package.json file:

graphgist-portal-v3/api/package.json

Line 26 in 20efc9c

"asciidoctor": "^2.2.0",

As a result, we should also update the require / import statements:

graphgist-portal-v3/api/src/graphgists/utils.js

Line 1 in 20efc9c

import Asciidoctor from "asciidoctor";

becomes:

import Asciidoctor from "@asciidoctor/core";