update oaklib to help with main branch test failures

[sierra-moxon]

main branch test failures via upstream oaklib changes (I think)

________________ ERROR collecting tests/test_annotators/test_lov_schema_annotator.py _________________
ImportError while importing test module '/Users/SMoxon/Documents/src/schema-automator/tests/test_annotators/test_lov_schema_annotator.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
../../../.pyenv/versions/3.9.7/lib/python3.9/importlib/__init__.py:127: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
tests/test_annotators/test_lov_schema_annotator.py:11: in <module>
    from oaklib.implementations import BioportalImplementation
E   ImportError: cannot import name 'BioportalImplementation' from 'oaklib.implementations' (/Users/SMoxon/Documents/src/schema-automator/.venv/lib/python3.9/site-packages/oaklib/implementations/__init__.py)