feat: Add Latvian translations for validation error messages

[Albertbol]

Connection with issue(s)

Solution description

Screenshots or Videos

To Do

• Read contributing guide
• Check the original issue to confirm it is fully satisfied
• Add solution description to help guide reviewers
• Add unit test to verify new or fixed behaviour
• If apply, add documentation to code properties and package readme

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.20%. Comparing base (0e6f8c3) to head (968d188).
Report is 2 commits behind head on main.

Additional details and impacted files

@@ Coverage Diff @@ ## main #132 +/- ## ======================================= Coverage 99.20% 99.20% ======================================= Files 95 95 Lines 1011 1011 ======================================= Hits 1003 1003 Misses 8 8 

Flag	Coverage Δ
unittests	99.20% <ø> (ø)

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