[pgadmin-org/pgadmin4] bb570a: Update release notes

[Aditya Toshniwal]

  Branch: refs/heads/master
  Home:   https://github.com/pgadmin-org/pgadmin4
  Commit: bb570a50aed04b46ae7e23c88291d9c37c91bf59
      
https://github.com/pgadmin-org/pgadmin4/commit/bb570a50aed04b46ae7e23c88291d9c37c91bf59
  Author: Aditya Toshniwal <aditya.toshni...@enterprisedb.com>
  Date:   2023-06-19 (Mon, 19 Jun 2023)

  Changed paths:
    M docs/en_US/release_notes_7_4.rst

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