[pgadmin-org/pgadmin4] af1f4b: Update version for release v8.3

[Akshay Joshi]

  Branch: refs/heads/master
  Home:   https://github.com/pgadmin-org/pgadmin4
  Commit: af1f4b3aa77243cc720d5128f5f8bc1d5fe2cdbe
      
https://github.com/pgadmin-org/pgadmin4/commit/af1f4b3aa77243cc720d5128f5f8bc1d5fe2cdbe
  Author: Akshay Joshi <akshay.jo...@enterprisedb.com>
  Date:   2024-02-05 (Mon, 05 Feb 2024)

  Changed paths:
    M docs/en_US/release_notes_8_3.rst
    M web/config.py

  Log Message:
  -----------
  Update version for release v8.3