borgmatic 1.4.7

• #238: In documentation, clarify when Healthchecks/Cronitor hooks fire in relation to other hooks.
• #239: Upgrade your borgmatic configuration to get new options and comments via
  "generate-borgmatic-config --source". See the documentation for more information:
  https://torsion.org/borgmatic/docs/how-to/upgrade/#upgrading-your-configuration