Revise tolerance of sdcflows/interfaces/tests/test_bspline.py::test_bsplines

[oesteban]

What happened?

While debugging #346, and after incorporating #368, I discovered that the intermediate results of sdcflows/interfaces/tests/test_bspline.py::test_bsplines didn't make any sense (see commit comment of 6678591 ).

After that commit (6678591), the intermediate results make more sense, but I had to raise the tolerance of the test to 25Hz of error, which may (or may not) be too much.

This test should be revised and determine whether the tolerance of 25 Hz is acceptable.

What command did you use?

pytest sdcflows/interfaces/tests/test_bspline.py::test_bsplines[0]

What version of the software are you running?

latest

How are you running this software?

Local installation ("bare-metal")

Is your data BIDS valid?

Yes

Are you reusing any previously computed results?

No

Please copy and paste any relevant log output.

No response

Additional information / screenshots

No response