Update README.md

[stevieing]

Closes #

Changes proposed in this pull request

• Updated production postgres version.
• Enhanced instructions for using postgres.

Instructions for Reviewers

[All PRs] - Confirm PR template filled
[Feature Branches] - Review code
[Production Merges to main]
    - Check story numbers included
    - Check for debug code
    - Check version

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (491bee6) 88.05% compared to head (512f6cb) 88.05%.
Report is 8 commits behind head on develop.

❗ Current head 512f6cb differs from pull request most recent head baa351e. Consider uploading reports for the commit baa351e to get more accurate results

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #456   +/-   ##
========================================
  Coverage    88.05%   88.05%           
========================================
  Files           17       17           
  Lines          536      536           
  Branches        61       61           
========================================
  Hits           472      472           
  Misses          57       57           
  Partials         7        7           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[yoldas]

baracoda_prod=> select version();
                                                                version                                                                 
----------------------------------------------------------------------------------------------------------------------------------------
 PostgreSQL 14.10 (Ubuntu 14.10-0ubuntu0.22.04.1) on x86_64-pc-linux-gnu, compiled by gcc (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0, 64-bit
(1 row)