Set tests to error on uncaught warnings

[brandonwillard]

Closes #166

[rlouf]

I rebased this PR on main, the tests fail because of the following warning:

UserWarning: Rewrite warning: The Op i0 does not provide a C implementation. As well as being potentially slow, this also disables loop fusion.

i0 seems to be the modified Bessel function of the first kind of order 0 (https://github.com/aesara-devs/aesara/blob/a1739f6c56f018d3c5508cd67e0e9a35617f66d6/aesara/tensor/math.py#L1402). Do we want a C implementation for this in Aesara or should we just ignore the warning?

[brandonwillard]

Do we want a C implementation for this in Aesara or should we just ignore the warning?

Ideally, we would have a C implementation, but we should simply catch/ignore acceptable warnings like this using pytest.warns or something similar.

[codecov]

Codecov Report

Base: 95.16% // Head: 95.08% // Decreases project coverage by -0.08% ⚠️

Coverage data is based on head (236dcbb) compared to base (961496a).
Patch coverage: 98.11% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #167      +/-   ##
==========================================
- Coverage   95.16%   95.08%   -0.09%     
==========================================
  Files          12       12              
  Lines        1945     1974      +29     
  Branches      254      258       +4     
==========================================
+ Hits         1851     1877      +26     
- Misses         52       55       +3     
  Partials       42       42              

Impacted Files	Coverage Δ
aeppl/transforms.py	96.25% <92.85%> (-0.19%)	⬇️
aeppl/joint_logprob.py	95.00% <100.00%> (+0.88%)	⬆️
aeppl/logprob.py	98.07% <100.00%> (+0.03%)	⬆️
aeppl/scan.py	94.73% <100.00%> (ø)
aeppl/mixture.py	96.59% <0.00%> (-1.14%)	⬇️

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