Support numpy 2.0 in the testing suite.

[h-mayorquin]

More support for numpy 2.0 in the testing suite.

• I need to change the representation in some warning functions because of this:

https://numpy.org/devdocs/release/2.0.0-notes.html#representation-of-numpy-scalars-changed

• And also:

Use of keyword arguments x and y with functions assert_array_equal and assert_array_almost_equal has been deprecated. Pass the first two arguments as positional arguments instead.

https://numpy.org/devdocs/release/2.0.0-notes.html#deprecations

[codecov]

Codecov Report

Attention: Patch coverage is 85.00000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 90.40%. Comparing base (fe9badc) to head (d3bc495).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
...c/neuroconv/tools/testing/data_interface_mixins.py	83.33%	3 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1235   +/-   ##
=======================================
  Coverage   90.39%   90.40%           
=======================================
  Files         133      133           
  Lines        8508     8511    +3     
=======================================
+ Hits         7691     7694    +3     
  Misses        817      817           

Flag	Coverage Δ
unittests	90.40% <85.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...c/neuroconv/tools/spikeinterface/spikeinterface.py	95.53% <100.00%> (+0.02%)	⬆️
...c/neuroconv/tools/testing/data_interface_mixins.py	95.67% <83.33%> (ø)