Add optional should_release_connection parameter to connection_named method

[aranke]

Problem

There's no way to stop the connection_named context manager from releasing its connection at the end.

Solution

Add an optional should_release_connection parameter that allows holding on to the connection.

Checklist

• I have read the contributing guide and understand what's expected of me
• I have run this code in development, and it appears to resolve the stated issue
• This PR includes tests, or tests are not required/relevant for this PR
• This PR has no interface changes (e.g., macros, CLI, logs, JSON artifacts, config files, adapter interface, etc.) or this PR has already received feedback and approval from Product or DX

[github-actions]

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