DPL-1088 [Baracoda] Enable dependency updates

[yoldas]

Describe the Housekeeping
As developer (ay6) I would like to the dependency updates enabled which are currently disabled or blocked because of major version changes and test failures.

Acceptance Criteria

• Update Flask and werkzeug versions gradually. See the next items.
• Review tests for the error responses (400, 422, and 500). Check if Flask update changes the code for a service error.
• Review the use of GET or POST requests interchangeably, either use one of the methods or make sure they behave the same
• Upgrade SQLAlchemy from version 1.4 series to 2.0 series. This is a major change in database access.
• Apply other dependency updates (dependabot PRs)

Blocking issues
No blocking issue

Additional context
Flask update might make the service return a different error status code for example HTTP_UNPROCESSABLE_ENTITY (422), HTTP_BAD_REQUEST (400), INTERNAL_SERVER_ERROR (500), which causes test failure. Overall, using GET and POST requests interchangeably needs to be reviewed along with the response codes.

[yoldas]

Tasks:

• Clone baracoda, install test environment
• Apply simple dependabot PRs.
• Update black PR and ask for review and apply
• Update sqlalchemy PR and ask for review and apply
• Refactor error responses in GET/POST methods