feat: add dependabot

# To get started with Dependabot version updates, you'll need to specify which

# package ecosystems to update and where the package manifests are located.

# Please see the documentation for all configuration options:

# https://help.github.com/github/administering-a-repository/configuration-options-for-dependency-updates

version: 2

updates:

  # Maintain dependencies for GitHub Actions

  - package-ecosystem: "github-actions"

    directory: "/"

    schedule:

      interval: "weekly"