renovate.json

{
  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
  "extends": [
    "config:base"
  ],
  "packageRules": [
    {
      "matchPackageNames": ["ch.qos.logback:logback-classic"],
      "allowedVersions": "<1.4.0"
    }
  ]
}