Explicitly upgrade slf4j to allow MDG usage

[Technici4n]

Tested working with MDG, NG, and in prod.

[neoforged-pr-publishing]

• Publish PR to GitHub Packages

Last commit published: 20f0758fda80d5360fb2f107cf07cec55ba45edb.

PR Publishing

The artifacts published by this PR:

• 📦 net.neoforged:neoforge:20.4.240-pr-1817-fix-20.4-mdg
• 📦 net.neoforged:testframework:20.4.240-pr-1817-fix-20.4-mdg

Repository Declaration

In order to use the artifacts published by the PR, add the following repository to your buildscript:

repositories {
    maven {
        name 'Maven for PR #1817' // https://github.com/neoforged/NeoForge/pull/1817
        url 'https://prmaven.neoforged.net/NeoForge/pr1817'
        content {
            includeModule('net.neoforged', 'neoforge')
            includeModule('net.neoforged', 'testframework')
        }
    }
}

MDK installation

In order to setup a MDK using the latest PR version, run the following commands in a terminal.
The script works on both *nix and Windows as long as you have the JDK bin folder on the path.
The script will clone the MDK in a folder named NeoForge-pr1817.
On Powershell you will need to remove the -L flag from the curl invocation.

mkdir NeoForge-pr1817
cd NeoForge-pr1817
curl -L https://prmaven.neoforged.net/NeoForge/pr1817/net/neoforged/neoforge/20.4.240-pr-1817-fix-20.4-mdg/mdk-pr1817.zip -o mdk.zip
jar xf mdk.zip
rm mdk.zip || del mdk.zip

To test a production environment, you can download the installer from here.

[neoforged-releases]

🚀 This PR has been released as NeoForge version 20.4.239.