Data update: new iso-codes release

[llimeht]

There's a new iso-codes package out now, with version 4.8.0 being uploaded to Debian.

https://salsa.debian.org/iso-codes-team/iso-codes

The current Python bindings look like they need some updates to match the new version of iso-codes; naïvely using them together has most tests pass with the following failures:

FAILED test_general.py::test_country_fuzzy_search - LookupError: england
FAILED test_general.py::test_subdivisions_directly_accessible - AssertionErro...
FAILED test_general.py::test_subdivisions_have_subdivision_as_parent - Attrib...
FAILED test_general.py::test_repr - assert None
FAILED test_general.py::test_lookup - LookupError: Could not find a record fo...

I've not investigated further to find out whether it's a matter of updating the test data to match data changes or more complicated changes in the data model.