Add migrations for latest UserCode and CodeHistory

[BrendanSchell]

Description

Adds missing migrations from https://github.com/OpenMined/PySyft/pull/8969 for UserCode and CodeHistory.

Affected Dependencies

List any dependencies that are required for this change.

How has this been tested?

Tested locally using obj.migrate_to(version_no).

Checklist

• [ ] I have followed the Contribution Guidelines and Code of Conduct
• [ ] I have commented my code following the OpenMined Styleguide
• [ ] I have labeled this PR with the relevant Type labels
• [ ] My changes are covered by tests