[pgadmin-org/pgadmin4] ff3555: Update release notes.

[Akshay Joshi]

  Branch: refs/heads/master
  Home:   https://github.com/pgadmin-org/pgadmin4
  Commit: ff3555cf1d29d4c9afd98c1e73aa6a9a2edd1db8
      
https://github.com/pgadmin-org/pgadmin4/commit/ff3555cf1d29d4c9afd98c1e73aa6a9a2edd1db8
  Author: Akshay Joshi <akshay.jo...@enterprisedb.com>
  Date:   2023-03-02 (Thu, 02 Mar 2023)

  Changed paths:
    M docs/en_US/release_notes.rst
    M docs/en_US/release_notes_6_21.rst
    A docs/en_US/release_notes_7_0.rst

  Log Message:
  -----------
  Update release notes.