[BUG] FutureWarning from CuPy on resample

[charlesbluca]

Describe the bug
When resampling a CuPy array, we get a FutureWarning instructing us not to use a non-tuple sequence for multidimensional indexing:

/opt/conda/envs/rapids/lib/python3.9/site-packages/cusignal-22.4.0a0+g8878bf7-py3.9.egg/cusignal/filtering/resample.py:269: FutureWarning: Using a non-tuple sequence for multidimensional indexing is deprecated; use `arr[tuple(seq)]` instead of `arr[seq]`. In the future this will be interpreted as an array index, `arr[cupy.array(seq)]`, which will result either in an error or a different result.
  Y[sl] = X[sl]

Steps/Code to reproduce bug
With latest 22.06 conda nightlies:

import cupy as cp
import cusignal

start = 0
stop = 10
num = int(1e8)
resample_num = int(1e5)

gx = cp.linspace(start, stop, num, endpoint=False)
gy = cp.cos(-gx**2/6.0)

gf = cusignal.resample(gy, resample_num)

Expected behavior
Would not expect this warning to appear when resampling.

Environment details (please complete the following information):

• Environment location: bare-metal
• Method of cuSignal install: conda

Additional context
Came across this issue while testing the filtering examples notebook.

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[github-actions]

This issue has been labeled inactive-90d due to no recent activity in the past 90 days. Please close this issue if no further response or action is needed. Otherwise, please respond with a comment indicating any updates or changes to the original issue and/or confirm this issue still needs to be addressed.