[pgadmin-org/pgadmin4] 486e68: Update release note

[Akshay Joshi]

  Branch: refs/heads/master
  Home:   https://github.com/pgadmin-org/pgadmin4
  Commit: 486e68b8be1ac207a13c5556a8551e5acad5b7f9
      
https://github.com/pgadmin-org/pgadmin4/commit/486e68b8be1ac207a13c5556a8551e5acad5b7f9
  Author: Akshay Joshi <akshay.jo...@enterprisedb.com>
  Date:   2023-02-22 (Wed, 22 Feb 2023)

  Changed paths:
    M docs/en_US/release_notes_6_21.rst

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