Slavic plural tests cases update

[jglaszka]

Related to https://github.com/allegro/tradukisto/issues/95

Update tests' cases to spot regression before refactor in https://github.com/allegro/tradukisto/pull/96/files

[codecov-commenter]

Codecov Report

Merging #97 (ebd81b8) into master (dff17cc) will decrease coverage by 0.13%. The diff coverage is 98.96%.

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@@             Coverage Diff              @@
##             master      #97      +/-   ##
============================================
- Coverage     99.86%   99.73%   -0.13%     
- Complexity      387      421      +34     
============================================
  Files            58       63       +5     
  Lines          1431     1520      +89     
  Branches         42       47       +5     
============================================
+ Hits           1429     1516      +87     
- Misses            0        2       +2     
  Partials          2        2              

Impacted Files	Coverage Δ
...languages/french/FrenchNumberToWordsConverter.java	100.00% <ø> (ø)
...inance/tradukisto/internal/support/MapSupport.java	80.00% <80.00%> (ø)
...ro/finance/tradukisto/internal/support/Assert.java	85.71% <85.71%> (ø)
...llegro/finance/tradukisto/LongValueConverters.java	100.00% <100.00%> (ø)
...pl/allegro/finance/tradukisto/MoneyConverters.java	100.00% <100.00%> (ø)
...pl/allegro/finance/tradukisto/ValueConverters.java	100.00% <100.00%> (ø)
...allegro/finance/tradukisto/internal/Container.java	100.00% <100.00%> (ø)
...o/finance/tradukisto/internal/NumberProcessor.java	100.00% <100.00%> (ø)
.../converters/BigDecimalToBankingMoneyConverter.java	100.00% <100.00%> (ø)
.../internal/converters/HundredsToWordsConverter.java	100.00% <100.00%> (ø)
... and 23 more