Some tests are not passing with NumPy 1.24.0 or later

[carlosal1015]

Hi, there are some errors in newer versions of NumPy, e.g. 1.24.0 or later.

============================= test session starts ==============================
platform linux -- Python 3.10.9, pytest-7.2.1, pluggy-1.0.0
rootdir: /tmp/makepkg/python-krypy/src/krypy-2.2.0
collected 20 items / 3 errors
==================================== ERRORS ====================================
________________ ERROR collecting krypy/tests/test_deflation.py ________________
krypy/tests/test_deflation.py:3: in <module>
    import krypy.tests.test_linsys as test_linsys
<frozen importlib._bootstrap>:1027: in _find_and_load
    ???
<frozen importlib._bootstrap>:1006: in _find_and_load_unlocked
    ???
<frozen importlib._bootstrap>:688: in _load_unlocked
    ???
/usr/lib/python3.10/site-packages/_pytest/assertion/rewrite.py:168: in exec_module
    exec(co, module.__dict__)
krypy/tests/test_linsys.py:109: in <module>
    {'A': test_utils.get_matrix_hpd(),
krypy/tests/test_utils.py:16: in get_matrix_hpd
    a = numpy.array(numpy.linspace(1, 2, 10), dtype=numpy.complex)
/usr/lib/python3.10/site-packages/numpy/__init__.py:284: in __getattr__
    raise AttributeError("module {!r} has no attribute "
E   AttributeError: module 'numpy' has no attribute 'complex'. Did you mean: 'complex_'?
_________________ ERROR collecting krypy/tests/test_linsys.py __________________
krypy/tests/test_linsys.py:109: in <module>
    {'A': test_utils.get_matrix_hpd(),
krypy/tests/test_utils.py:16: in get_matrix_hpd
    a = numpy.array(numpy.linspace(1, 2, 10), dtype=numpy.complex)
/usr/lib/python3.10/site-packages/numpy/__init__.py:[284](https://gitlab.com/dune-archiso/testing/aur/aur/-/jobs/3663929125#L284): in __getattr__
    raise AttributeError("module {!r} has no attribute "
E   AttributeError: module 'numpy' has no attribute 'complex'. Did you mean: 'complex_'?
________________ ERROR collecting krypy/tests/test_recycling.py ________________
krypy/tests/test_recycling.py:2: in <module>
    import krypy.tests.test_linsys as test_linsys
<frozen importlib._bootstrap>:1027: in _find_and_load
    ???
<frozen importlib._bootstrap>:1006: in _find_and_load_unlocked
    ???
<frozen importlib._bootstrap>:688: in _load_unlocked
    ???
/usr/lib/python3.10/site-packages/_pytest/assertion/rewrite.py:168: in exec_module
    exec(co, module.__dict__)
krypy/tests/test_linsys.py:109: in <module>
    {'A': test_utils.get_matrix_hpd(),
krypy/tests/test_utils.py:16: in get_matrix_hpd
    a = numpy.array(numpy.linspace(1, 2, 10), dtype=numpy.complex)
/usr/lib/python3.10/site-packages/numpy/__init__.py:284: in __getattr__
    raise AttributeError("module {!r} has no attribute "
E   AttributeError: module 'numpy' has no attribute 'complex'. Did you mean: 'complex_'?
=============================== warnings summary ===============================
krypy/utils.py:13
  /tmp/makepkg/python-krypy/src/krypy-2.2.0/krypy/utils.py:13: DeprecationWarning: Please use `isintlike` from the `scipy.sparse` namespace, the `scipy.sparse.sputils` namespace is deprecated.
    from scipy.sparse.sputils import isintlike
krypy/tests/test_utils.py:94
  krypy/tests/test_utils.py:94: PytestCollectionWarning: yield tests were removed in pytest 4.0 - test_house will be ignored
    def test_house():
krypy/tests/test_utils.py:128
  krypy/tests/test_utils.py:128: PytestCollectionWarning: yield tests were removed in pytest 4.0 - test_givens will be ignored
    def test_givens():
krypy/tests/test_utils.py:149
  krypy/tests/test_utils.py:149: PytestCollectionWarning: yield tests were removed in pytest 4.0 - test_projection will be ignored
    def test_projection():
krypy/tests/test_utils.py:216
  krypy/tests/test_utils.py:216: PytestCollectionWarning: yield tests were removed in pytest 4.0 - test_qr will be ignored
    def test_qr():
krypy/tests/test_utils.py:243
  krypy/tests/test_utils.py:243: PytestCollectionWarning: yield tests were removed in pytest 4.0 - test_angles will be ignored
    def test_angles():
krypy/tests/test_utils.py:[292](https://gitlab.com/dune-archiso/testing/aur/aur/-/jobs/3663929125#L292)
  krypy/tests/test_utils.py:292: PytestCollectionWarning: yield tests were removed in pytest 4.0 - test_hegedus will be ignored
    def test_hegedus():
krypy/tests/test_utils.py:338
  krypy/tests/test_utils.py:338: PytestCollectionWarning: yield tests were removed in pytest 4.0 - test_arnoldi will be ignored
    def test_arnoldi():
krypy/tests/test_utils.py:485
  krypy/tests/test_utils.py:485: PytestCollectionWarning: yield tests were removed in pytest 4.0 - test_ritz will be ignored
    def test_ritz():
krypy/tests/test_utils.py:637
  krypy/tests/test_utils.py:637: PytestCollectionWarning: yield tests were removed in pytest 4.0 - test_NormalizedRootsPolynomial will be ignored
    def test_NormalizedRootsPolynomial():
-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
=========================== short test summary info ============================
ERROR krypy/tests/test_deflation.py - AttributeError: module 'numpy' has no attribute 'complex'. Did you mean: 'complex_'?
ERROR krypy/tests/test_linsys.py - AttributeError: module 'numpy' has no attribute 'complex'. Did you mean: 'complex_'?
ERROR krypy/tests/test_recycling.py - AttributeError: module 'numpy' has no attribute 'complex'. Did you mean: 'complex_'?
!!!!!!!!!!!!!!!!!!! Interrupted: 3 errors during collection !!!!!!!!!!!!!!!!!!!!
======================== 10 warnings, 3 errors in 0.43s ========================