[Validator] added missing estonian translation of messages
merged branch kgilden/2.2 (PR #7776)

This PR was merged into the 2.2 branch.

Discussion
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[Validator] added missing estonian translation of messages

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

This commit adds missing Estonian translation of messages introduced in 2.2. It's a follow-up to #7769.

Commits
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633b63b [Validator] added missing estonian translation of messages