[pgadmin-org/pgadmin4] e56a1f: Update release note

[Akshay Joshi]

  Branch: refs/heads/master
  Home:   https://github.com/pgadmin-org/pgadmin4
  Commit: e56a1f3e2dc8c8659332a36b22a67f8834beaf56
      
https://github.com/pgadmin-org/pgadmin4/commit/e56a1f3e2dc8c8659332a36b22a67f8834beaf56
  Author: Akshay Joshi <akshay.jo...@enterprisedb.com>
  Date:   2023-02-20 (Mon, 20 Feb 2023)

  Changed paths:
    M docs/en_US/release_notes_6_21.rst

  Log Message:
  -----------
  Update release note