[pgadmin-org/pgadmin4] e70f11: Update release note

[Akshay Joshi]

  Branch: refs/heads/master
  Home:   https://github.com/pgadmin-org/pgadmin4
  Commit: e70f115b4876adc73237310d16329103922c49ca
      
https://github.com/pgadmin-org/pgadmin4/commit/e70f115b4876adc73237310d16329103922c49ca
  Author: Akshay Joshi <akshay.jo...@enterprisedb.com>
  Date:   2023-02-14 (Tue, 14 Feb 2023)

  Changed paths:
    M docs/en_US/release_notes_6_21.rst

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