v0.10.0

Added

• Upstream release watch (release = { github = "owner/repo", ... } per
  monitor): twice a day Hora asks GitHub for the project's latest release
  (no draft, no prerelease) and alerts, once per release and across restarts,
  when it is newer than the version that runs - "matrix-construct/tuwunel
  v1.9.2 is out (running v1.9.1)", with the link to the notes, through the
  monitor's notify routing and muted during its maintenance. The running
  version is a literal (current) or, so it cannot drift from what is
  deployed, asked of the service itself (current_url, plus current_query,
  a JSONPath, when the answer is JSON). New release_available webhook event
  (project, current, latest, url); schema migration 0018
  (release_watch) applies automatically. As with every new key, a config
  that uses release is rejected by an older binary (deny_unknown_fields).