Upgrade marshmallow-sqlalchemy

[kalbfled]

User Story - Business Need

• Ticket is understood, and QA has been contacted (if the ticket has a QA label).

User Story(ies)

As a Notify developer,
I want to use the latest version of marshmallow-sqlalchemy
So that we avoid bit rot.

Additional Info and Resources

During the routine upgrades for #2243, upgrading marshmallow-sqlalchemy from v1.1.1 to v1.4.x caused 6 unit test failures. They all failed with a traceback indicating that "communication_item_id" was not found on the template schema instance. That package is now pinned at ~1.1.1 in pyproject.toml.

• changelog

Acceptance Criteria

• marshmallow-sqlalchemy upgraded to the newest version with all tests passing
• hardcoded value in pyproject.toml removed
• This work is added to the sprint review slide deck (key win bullet point and demo slide)

QA Considerations

Potential Dependencies