v0.7.0

Changed

• Breaking: proposal-lifecycle-shared.yml is renamed to
  proposal-shared.yml, matching the <name>-shared.yml pattern used by the
  other reusable workflows. The workflow's name: and its Telegram-report
  workflow: value change from "Proposal Lifecycle" to "Proposal", and its
  concurrency group prefixes shorten from proposal-lifecycle-* to
  proposal-*.