Parallel cache files test fix

[IIaKyJIuH]

Updated test_parallel_cache_files.py with current FEDOT state in order to pass pytest.

[codecov[bot]]

Codecov Report

Merging #1109 (b0edc66) into master (db4d844) will increase coverage by 0.05%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1109      +/-   ##
==========================================
+ Coverage   78.65%   78.70%   +0.05%     
==========================================
  Files         130      130              
  Lines        9303     9303              
==========================================
+ Hits         7317     7322       +5     
+ Misses       1986     1981       -5     

Impacted Files	Coverage Δ
fedot/core/caching/base_cache_db.py	50.00% <100.00%> (+2.77%)	:arrow_up:

... and 5 files with indirect coverage changes