import { getDenoImportMapFiles } from "https://dotland.deno.dev/x/deno_slack_hooks@0.5.0/check_update.ts";
getDenoImportMapFiles cycles through supported deno.* files and,
if an importMap key is found, returns an array of arrays made up
of filename and dependency key pairs.
ex: [["import_map.json", "imports"], ["custom_map.json", "imports"]]