fix multiple bugs introduced by pandas, sklearn and scipy latest versions

[solegalli]

closes #689

[codecov]

Codecov Report

Merging #690 (efb425d) into main (3343305) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main     #690   +/-   ##
=======================================
  Coverage   97.99%   97.99%           
=======================================
  Files         100      100           
  Lines        3843     3847    +4     
  Branches      754      751    -3     
=======================================
+ Hits         3766     3770    +4     
  Misses         28       28           
  Partials       49       49           

Files Changed	Coverage Δ
feature_engine/creation/math_features.py	97.77% <ø> (ø)
feature_engine/datetime/datetime.py	100.00% <100.00%> (ø)
feature_engine/datetime/datetime_subtraction.py	94.73% <100.00%> (+0.07%)	⬆️
feature_engine/encoding/base_encoder.py	100.00% <100.00%> (ø)
feature_engine/encoding/one_hot.py	100.00% <100.00%> (ø)
feature_engine/encoding/rare_label.py	100.00% <100.00%> (ø)
feature_engine/imputation/categorical.py	95.31% <100.00%> (ø)
feature_engine/selection/shuffle_features.py	100.00% <100.00%> (ø)
feature_engine/transformation/yeojohnson.py	100.00% <100.00%> (ø)
...ngine/variable_handling/variable_type_selection.py	94.79% <100.00%> (-0.06%)	⬇️

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[solegalli]

Eureka!!! All tests are now working!!