renovate.json5

{
  $schema: "https://docs.renovatebot.com/renovate-schema.json",
  extends: [
    "config:base",
  ],
  rebaseWhen: "behind-base-branch",
  prCreation: "not-pending",
  dependencyDashboard: true,
  automerge: true,
  major: {
    automerge: false,
  },
  packageRules: [
    {
      // Don't create PRs for Renovate package updates
      groupName: "Renovate",
      matchPackageNames: "renovate",
      automergeType: "branch",
    },
    {
      // Spring Boot version should be the lowest supported minor version
      groupName: "Spring Boot",
      matchFileNames: [
        "gradle/libs.versions.toml",
      ],
      matchPackagePrefixes: [
        "org.springframework.boot",
      ],
      allowedVersions: "/^[0-9]+\\.0\\.0$/", // only allow major version updates
      automerge: false,
      minor: {
        enabled: false,
      },
      patch: {
        enabled: false,
      },
      prBodyNotes: [
        ":warning: `README.md` must be updated manually",
        "Update Kotlin version (`kotlinLib` in `/gradle/libs.versions.toml`) to version managed by Spring Boot",
      ],
    },
  ],
}