Update the Discord build_info.json file so that you can still use it when there is a new version available.

discordVersionUpdater.py

#!/usr/bin/env python3
# Copyright (C) 2022 Joe Baker (JoeBlakeB)
# This program is free software under the GPLv3 license.
#
# This script is used to update the version number in the Discord 
# build_info.json file so that you do not need to manually update it,
# or wait for the package maintainer to update it.
# Discord will instead open normally and will not prompt you to update.
#
# Requirements: python3 and requests
# and for you to have the following line in your sudoers file:
#   <username> ALL=(ALL) NOPASSWD: /usr/bin/tee /opt/discord/resources/build_info.json
# 
# Usage: Change the Exec line in the discord.desktop file to run this script, for example:
# Exec=/home/<user>/.local/bin/discordVersionUpdater.py && /usr/bin/discord

import json
import os
import re
import requests

x = requests.head("https://discord.com/api/download/stable?platform=linux&format=tar.gz")

versionNumber = x.headers["location"].split("/linux/")[1].split("/discord-")[0]

if not re.match(r"^[0-9]+\.[0-9]+\.[0-9]+$", versionNumber):
    print("The version number is not valid")
    exit(1)

currentVersion = json.loads(open("/opt/discord/resources/build_info.json").read())["version"]
if currentVersion == versionNumber:
    exit(0)

output = json.dumps({
    "releaseChannel": "stable",
    "version": versionNumber})

os.system("echo '" + output + "' | sudo /usr/bin/tee /opt/discord/resources/build_info.json")