fix sporadic forecasting test failure

[Lopa10ko]

This is a 🐛 bug fix.

Summary

• Changed search space for the field of a seasonal_periods 488c12f
• Added extra validation for the ETSModel parameters to avoid NaNs in the fitted data 47371c0
• Resolved gensim dependency to recent gensim fix-commit 94df381

Context

closes #1279

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[github-actions]

All PEP8 errors has been fixed, thanks ❤️

Comment last updated at

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 9 lines in your changes are missing coverage. Please review.

Project coverage is 79.90%. Comparing base (b711ebe) to head (94df381).

Files	Patch %	Lines
...entations/models/ts_implementations/statsmodels.py	50.00%	9 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1280      +/-   ##
==========================================
- Coverage   79.92%   79.90%   -0.03%     
==========================================
  Files         146      146              
  Lines       10049    10065      +16     
==========================================
+ Hits         8032     8042      +10     
- Misses       2017     2023       +6     

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[valer1435]

Запусти 2 раза интеграционники на этой ветке, если все ок -вливай

[valer1435]

Лучше сделать так:

if self._check_and_correct_params(endog) # need to change return statement
        self.log.info(f'Changed the following ETSModel parameters: {self.params.changed_parameters}')

Чтобы не вводить юзера в заблуждение, что параметры меняются (а они могут и не поменяться)

[Lopa10ko]

ccd49db