Certificates are missing from the pypi tarball

In the 1.0.0 tarball available on pypi, the "certs" directory that is otherwise available in the github repository is missing.

In turn, this makes the tests fail:

======================================================================
ERROR: test_asdict (test.common.test_stores.TestRootCertificateParams)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/tmp/guix-build-python-cryptodatahub-1.0.0.drv-0/cryptodatahub-1.0.0/test/common/classes.py", line 241, in setUp
    self.fs.add_real_directory(str(self.__certs_dir))
  File "/gnu/store/smv0kgzdas0cs1xg44rw437ifyhaav9r-python-pyfakefs-4.6.3/lib/python3.10/site-packages/pyfakefs/fake_filesystem.py", line 2790, in add_real_directory
    self.raise_os_error(errno.ENOENT, source_path_str)
  File "/gnu/store/smv0kgzdas0cs1xg44rw437ifyhaav9r-python-pyfakefs-4.6.3/lib/python3.10/site-packages/pyfakefs/fake_filesystem.py", line 1122, in raise_os_error
    raise OSError(err_no, message, filename)
FileNotFoundError: [Errno 2] No such file or directory in the fake filesystem: '/tmp/guix-build-python-cryptodatahub-1.0.0.drv-0/cryptodatahub-1.0.0/test/common/certs'

[...]

Are they omitted on purpose? Is there a way to run the tests from the pypi tarball?