Pyld major version change

[SKernchen]

Our datamodel is currently working with 2.0.4.
There is already the version 3.0.1
Some test do not work with the newer version.
We should update our dependancies and the tests to solve this.
Tests failing:

FAILED test/hermes_test/model/types/test_ld_container.py::TestLdContainer::test_to_expanded_id - AssertionError: assert {'@id': 'http...org/base/ham'} == {'@id': 'ham'}
FAILED test/hermes_test/model/types/test_ld_container.py::TestLdContainer::test_to_expanded_id_with_prefix - AssertionError: assert {'@id': 'http...org/base/ham'} == {'@id': 'ham'}
FAILED test/hermes_test/model/types/test_ld_container.py::TestLdContainer::test_to_expanded_id_value - AssertionError: assert {'http://spam.../base/spam'}]} == {'http://spam...id': 'spam'}]}
FAILED test/hermes_test/model/types/test_ld_dict.py::test_build_in_comparison - AssertionError: assert ld_dict([{'@i...e': 'bar'}]}]) == {'@id': 'foo'}
FAILED test/hermes_test/model/types/test_ld_dict.py::test_update - AssertionError: assert {'http://xmln...lue': 'foo'}]} == {'http://xmln...lue': 'foo'}]}
FAILED test/hermes_test/model/types/test_ld_dict.py::test_items - AssertionError: assert ([{'@value': ...g/base/bar'}]) == ([{'@value': ...@id': 'bar'}])
FAILED test/hermes_test/model/types/test_ld_dict.py::test_to_python - AssertionError: assert {'xmlns:foo':...ame': ['foo']} == {'xmlns:foo':...ame': ['foo']}
FAILED test/hermes_test/model/types/test_ld_dict.py::test_from_dict - AssertionError: assert {'@id': 'http...lns:hompage']} == {'@id': 'foo'...lns:hompage']}
FAILED test/hermes_test/model/types/test_ld_list.py::test_append - AssertionError: assert ({'@type': ['h...value': 'a'}]} == {'@type': ['A...value': 'a'}]}
FAILED test/hermes_test/model/types/test_ld_list.py::test_extend - AssertionError: assert ({'@type': ['h...value': 'a'}]} == {'@type': ['A...value': 'a'}]}
FAILED test/hermes_test/model/types/test_ld_list.py::test_to_python - AssertionError: assert ['http://example.org/base/A'] == ['A']

Somehow example.org is put as long:iri and we can not handle it.

[SKernchen]

Ok so in pyld it is the

DEFAULT_BASE_IRI = 'http://example.org/base/'

and because our examples do not have a schema it is taken

[notactuallyfinn]

In this commit I changed the pyld version to 3.x.
All the tests are fixed too, by using schemas or adding the default base iri in.