change 0.16.0 warns to errors

[jcapriot]

This is prep for the next release changing future warnings to actual errors.

[codecov]

Codecov Report

Merging #1060 (4f4aa3d) into main (6f72c48) will decrease coverage by 0.29%.
The diff coverage is 73.18%.

@@            Coverage Diff             @@
##             main    #1060      +/-   ##
==========================================
- Coverage   78.70%   78.41%   -0.30%     
==========================================
  Files         173      173              
  Lines       20785    20751      -34     
==========================================
- Hits        16358    16271      -87     
- Misses       4427     4480      +53     

Impacted Files	Coverage Δ
SimPEG/directives/directives.py	73.41% <ø> (ø)
SimPEG/electromagnetics/analytics/FDEM.py	85.71% <0.00%> (+2.95%)	⬆️
...imPEG/electromagnetics/frequency_domain/sources.py	87.58% <ø> (ø)
SimPEG/electromagnetics/frequency_domain/survey.py	85.71% <ø> (ø)
...lectromagnetics/natural_source/utils/data_utils.py	12.44% <0.00%> (ø)
...tromagnetics/static/induced_polarization/survey.py	50.00% <0.00%> (ø)
...PEG/electromagnetics/static/resistivity/sources.py	82.43% <0.00%> (-5.41%)	⬇️
.../static/spectral_induced_polarization/receivers.py	73.03% <0.00%> (ø)
...cs/static/spectral_induced_polarization/sources.py	65.67% <0.00%> (ø)
...ics/static/spectral_induced_polarization/survey.py	38.88% <0.00%> (ø)
... and 104 more

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