[Validator] added missing Estonian translations

Estonian translations for the following validators:

-  Currency;
-  EqualTo;
-  IdenticalTo;
-  NotEqualTo;
-  NotIdenticalTo;
-  GreaterThan;
-  GreaterThanOrEqual;
-  LessThan;
-  LessThanOrEqual;
merged branch kgilden/trans-et (PR #8016)

This PR was merged into the master branch.

Discussion
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[Validator] added missing Estonian translations

| Q             | A
| ------------- | ---
| Fixed tickets | -
| License       | MIT

Commits
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fd2b260 [Validator] added missing Estonian translations