[parrot/parrot] f89a11: Add inactivity notice, for issue #1243

[Bruce Gray]

  Branch: refs/heads/master
  Home:   https://github.com/parrot/parrot
  Commit: f89a111c06ad0367817c52fda6ff5c24165c005b
      https://github.com/parrot/parrot/commit/f89a111c06ad0367817c52fda6ff5c24165c005b
  Author: Bruce Gray <bruce.gray at acm.org>
  Date:   2021-08-25 (Wed, 25 Aug 2021)

  Changed paths:
    M README.pod

  Log Message:
  -----------
  Add inactivity notice, for issue #1243