TruncatedNormal only accepts mu and sigma as non keyword arguments

[michaelraczycki]

What is this PR about?
Making params of TruncatedNormal distribution to avoid issues with icdf testing.

Checklist

Major / Breaking Changes

New features

Bugfixes

Documentation

Changes are self descriptive

Maintenance

[codecov]

Codecov Report

Merging #6568 (4643a1b) into main (31c30dc) will decrease coverage by 31.37%.
The diff coverage is n/a.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #6568       +/-   ##
===========================================
- Coverage   94.73%   63.37%   -31.37%     
===========================================
  Files         147       91       -56     
  Lines       27864    15114    -12750     
===========================================
- Hits        26398     9578    -16820     
- Misses       1466     5536     +4070     

Impacted Files	Coverage Δ
pymc/distributions/continuous.py	97.68% <ø> (ø)
pymc/ode/utils.py	15.62% <0.00%> (-84.38%)	⬇️
pymc/smc/kernels.py	19.34% <0.00%> (-78.11%)	⬇️
pymc/logprob/scan.py	19.57% <0.00%> (-77.78%)	⬇️
pymc/gp/gp.py	18.76% <0.00%> (-75.07%)	⬇️
pymc/logprob/mixture.py	24.72% <0.00%> (-73.63%)	⬇️
pymc/variational/updates.py	21.67% <0.00%> (-70.45%)	⬇️
pymc/func_utils.py	18.60% <0.00%> (-69.77%)	⬇️
pymc/gp/cov.py	29.15% <0.00%> (-68.94%)	⬇️
pymc/printing.py	19.35% <0.00%> (-68.55%)	⬇️
... and 121 more