[DRE-maint] Bug#1059338: Update database config for 15.9 -> 16.0 upgrade (current config is deprecated)

Fri Dec 22 19:59:10 GMT 2023

Package: gitlab
Version: 16.4.4+ds1-1
severity: important

Currently gitlab shows a warning during installation

           ██     ██  █████  ██████  ███    ██ ██ ███    ██  ██████ 
           ██     ██ ██   ██ ██   ██ ████   ██ ██ ████   ██ ██      
           ██  █  ██ ███████ ██████  ██ ██  ██ ██ ██ ██  ██ ██   ███ 
           ██ ███ ██ ██   ██ ██   ██ ██  ██ ██ ██ ██  ██ ██ ██    ██ 
            ███ ███  ██   ██ ██   ██ ██   ████ ██ ██   ████  ██████  

******************************************************************************
   Your database has a single connection, and single connections were
   deprecated in GitLab 15.9 
https://docs.gitlab.com/ee/update/deprecations.html#single-dat
abase-connection-is-deprecated.

   Please add a :ci section to your database, following these instructions:

https://docs.gitlab.com/ee/install/installation.html#configure-gitlab-db-settings.
******************************************************************************

We should follow the instructions to update the configuration.