Fix disabling SSL for MySQL connection

[dippindots]

Copied from #10276

Fix #10275

Problem

When migrating the database the migration.py script tries to connect to the MySQL database over SSL, despite the db.use_ssl property having value false.

Analysis

The current and broken logic in migration.py to configure SSL is:

connection_kwargs = {here
if portal_properties.database_use_ssl == 'true':
    connection_kwargs['ssl'] = {"ssl_mode": True}

When I change this to the following, the db.use_ssl property is respected:

connection_kwargs = {}
if portal_properties.database_use_ssl == 'true':
    connection_kwargs["ssl_mode"] = "REQUIRED"
else:
   connection_kwargs["ssl_mode"] = "DISABLED"

Changes in this PR

This PR will add the ssl_mode to the kwargs of the migration script.

[pvannierop]

I think there is a mismatch in the translation from my PR to this PR.

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

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