Updated config.yml for environment variable sql_alchemy_connect_args

[koushik-rout-samsung]

closes: #36207

Change description:
Updated config.yml for environment variable sql_alchemy_connect_args

Modified the existing example value to include dictionary parameters for setting up postgresql db connection.

[boring-cyborg]

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[potiuk]

wrong import.

[boring-cyborg]

Awesome work, congrats on your first merged pull request! You are invited to check our Issue Tracker for additional contributions.