fix: correct import in fiveg_f1 schema

[james-garner-canonical]

This PR updates the fiveg_f1/v0 schema to import conlist from pydantic instead of trying to import it from typing (where it is not available).

I noticed this error when running interface_tester discover.

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The discover interfaces job in CI runs Pydantic 1, and the schema uses the Pydantic 2 argument for conlist (2 uses min_length, 1 uses min_items), so this fix causes the CI job to fail.

It seems like a regression to port this to Pydantic 1 (though very easy), but running Pydantic 2 in CI doesn't seem to be an option right now as that would cause other schemas to error.

I guess it passed before because interface_tester logs import errors and exits with success, but exits with failure on type errors, but I haven't looked into it.

[dimaqq]

TypeError: conlist() got an unexpected keyword argument 'min_length'

[james-garner-canonical]

Yeah, noted in PR description. I don't think we should merge this as is. May convert this to an issue instead.