renovate-config-group-dev-dependencies.json

{
  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
  "description": "Preset to group all non-major dev dependency updates.",
  "packageRules": [
    {
      "matchDepTypes": ["devDependencies"],
      "matchUpdateTypes": ["patch", "minor"],
      "groupName": "devDependencies (non-major)"
    }
  ]
}